My Inquiry
My Account
Renesas HN27C4001G10
- Part No.:
- HN27C4001G10
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-CDIP (0.600", 15.24mm) Window
- Datasheet:
-
HN27C4001G10.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 32CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:833
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HN27C4001G10 from Hitachi is a 4-Mbit (524,288 × 8-bit) ultraviolet-erasable and electrically programmable ROM with 100 ns maximum access time, TTL-compatible I/O, and +12.5 V programming voltage - designed for high-speed microcomputer systems requiring nonvolatile program storage and field-reprogrammability via UV erasure.
For engineers reviewing the HN27C4001G10 datasheet, HN27C4001G10 pinout, HN27C4001G10 application, or HN27C4001G10 equivalent, this device supports page programming mode with 3.5 sec minimum programming time, operates at 5 V ±10% in read mode and 6.25 V ±0.25 V / 12.5 V ±0.3 V in program mode, and features JEDEC-standard 32-pin CERDIP (DG-32A) packaging with manufacturer/device identifier mode.
Technical Context
The HN27C4001G10 implements a 4096 × 1024 memory matrix with X- and Y-decoding architecture, supporting full 19-bit address space (A0–A18) and 8-bit bidirectional data I/O. It uses high-threshold inverters in control logic to ensure noise immunity during UV-erasable programming cycles.
Its dual-voltage operation enables reliable page programming under 6.25 V VCC and 12.5 V VPP biasing, with strict sequencing requirements (VCC applied before/removed after VPP), and supports three distinct programming modes: page program set/reset, word program, and optional page+verify - all verified by on-chip verify-read functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 4 Mbit (524,288 words × 8 bits) - supports full boot code or firmware image storage for 8/16-bit microcomputers |
| Access time (max) | 100 ns - enables direct interface with 10 MHz Z80, 8086, or 68000-class CPUs without wait states |
| Programming voltage | +12.5 V DC - requires dedicated EPROM programmer with regulated VPP supply and OE voltage control |
| Standby current | 5 µW (typ) - ultra-low quiescent power for battery-backed or low-power embedded systems |
| Operating current | 35 mW/MHz (typ) - scales linearly with bus activity, enabling predictable power budgeting |
| UV erasure dose | ≥15 W·s/cm² at 2537 Å - standard quartz-window EPROM eraser exposure time ~15–20 min |
| Package | DG-32A (600 mil 32-pin CERDIP) - hermetically sealed ceramic package with UV-transparent window |
Pinout & Package
HN27C4001G10 uses a 32-pin JEDEC-standard CERDIP (DG-32A) package with UV-transparent quartz window for erasure. Dimensions: 41.91 mm × 17.00 mm × 7.00 mm (L × W × H), 2.54 mm lead pitch, 0.48 mm lead thickness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address inputs | 19-bit address bus interface; A0–A5/A10 feed X-decoder, A6–A9 feed Y-gating, A11–A18 select row blocks |
| I/O0–I/O7 | Bidirectional data bus | TTL-compatible 8-bit data path; high-impedance during standby, output-enable controlled by OE |
| CE (22) | Chip enable | Active-low global chip select; must be low for read or program operations; controls ICC draw |
| OE (24) | Output enable | Active-low output gate; used in read mode and as VH (12.0 V) input to enter page program set mode |
| VPP (1) | Programming power | +12.5 V DC input; must be stable before VCC application; critical for oxide charge injection reliability |
| VCC (32) | Supply voltage | 5.0 V ±10% for read; 6.25 V ±0.25% for programming - dual-voltage operation prevents over-stress |
| VSS (16) | Ground | Signal and power reference; decoupling capacitor required between VCC and VSS near pin 32/16 |
Key Features
| Feature | Design Value |
|---|---|
| Page programming mode | Reduces total programming time to ≤3.5 sec by latching 8 bytes per CE pulse, eliminating per-byte verify overhead |
| Device identifier mode | Reads fixed 8-bit manufacturer code (07h) and device code (20h) via A9 = 12.0 V, enabling auto-algorithm selection in programmers |
| TTL-compatible I/O | Direct interface with 5 V logic families without level shifters; VIH/VIL thresholds validated across 0–70°C |
| Fast verify-read capability | On-chip verification during programming using same tOE (≤150 ns) timing as read mode, ensuring data integrity before exit |
| Low-power standby | 5 µW typical consumption when CE = VIH - suitable for always-on embedded controllers with infrequent firmware updates |
Applications
| Industrial Control Firmware Storage | Legacy Microcomputer Boot ROM |
|---|---|
Use Scenario: Storing fixed ladder logic interpreter or motion control algorithm in PLC mainboard where firmware rarely changes but must survive power loss. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to CPU address space; accessed at startup and during watchdog reset recovery. Use Value: UV-erasability allows field firmware revision without PCB replacement; 100 ns access avoids CPU wait-state insertion in 8 MHz 80C86-based designs. |
Use Scenario: Providing boot code for vintage Z80-based test equipment requiring cold-start execution from ROM without external loader. IC Role / Device Role / Timing Role: Primary boot ROM executing self-test and peripheral initialization; directly addressed via A0–A18 and decoded by 74LS138. Use Value: DG-32A ceramic package ensures long-term data retention (>10 years) and resistance to thermal cycling in lab environments. |
| Medical Device Calibration Data | Avionics System Configuration Memory |
Use Scenario: Holding factory-calibrated ADC offset/gain coefficients in portable ECG monitor, updated only during service calibration. IC Role / Device Role / Timing Role: Read-only configuration memory accessed during power-up initialization sequence; write-protected except during service mode. Use Value: Page programming enables fast recalibration (<5 sec) in service mode; 5 µW standby current extends battery life in portable units. |
Use Scenario: Storing flight-critical configuration tables (e.g., sensor scaling, fail-safe thresholds) in certified airborne data acquisition unit. IC Role / Device Role / Timing Role: Immutable configuration store verified at power-on self-test (POST); accessed via dedicated memory-mapped region. Use Value: Hermetic CERDIP package meets DO-160E vibration/shock requirements; UV erasure allows secure reprogramming during depot maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C4001-120DC | 120 ns access time; same 4 Mbit × 8, +12.5 V VPP, 32-pin CERDIP (JEDEC MS-015) | Slower timing margin; compatible with lower-clock microcontrollers (e.g., 8 MHz 6502) | Select if system timing budget allows 20 ns longer tACC and board already uses AMD-compatible footprint |
| MX27C4001PC-10 | 100 ns access; 5 V-only read operation; requires external VPP generator for programming | No integrated VPP sequencing control; relies on external circuitry for 12.5 V ramp and hold | Choose when cost-sensitive production favors mask-programmed alternative or existing toolchain supports MXIC-specific programming algorithms |
Compared with AM27C4001-120DC and MX27C4001PC-10, the HN27C4001G10 provides tighter 100 ns access timing and built-in device identifier mode for automated programming - making it preferable for high-speed, field-serviceable systems where guaranteed timing margins and programmer interoperability are critical.
Availability
HN27C4001G10 is available at Aetrix Electronics and suitable for industrial control firmware storage, legacy microcomputer boot ROM, medical device calibration data, and avionics system configuration memory requiring stable component supply, long-term data retention, and field-reprogrammability via UV erasure.
Supply support for HN27C4001G10 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Hitachi (now Renesas Electronics Corporation) is a Japanese semiconductor pioneer known for high-reliability memory and microcontroller solutions targeting industrial and automotive markets.
The HN27C4001G10 belongs to Hitachi's UV-erasable EPROM product line, engineered specifically for applications demanding deterministic timing, long-term data integrity, and compatibility with legacy 5 V microprocessor buses.
FAQ
What is the correct programming voltage and sequencing for HN27C4001G10?
The HN27C4001G10 requires +12.5 V ±0.3 V on VPP and +6.25 V ±0.25 V on VCC during programming. VCC must be applied simultaneously with or before VPP and removed simultaneously with or after VPP. Violating this sequence risks oxide damage and reduced data retention. The HN27C4001G10 datasheet specifies tVCS ≥2 µs and tVRS ≥1 µs for safe voltage transitions.
Does HN27C4001G10 support byte-level programming, or only page programming?
The HN27C4001G10 supports both word programming (single-byte write) and page programming (8-byte latch + simultaneous write). Page programming is recommended for speed: it reduces total programming time to ≤3.5 sec versus multi-second word-by-word methods. The HN27C4001G10 flowchart on page 12 confirms word programming as a valid mode with tPW = 50 µs ±5%.
How is the device identifier mode activated on HN27C4001G10?
To activate device identifier mode on HN27C4001G10, apply VCC = 5.0 V ±10%, set CE = OE = VIL, and drive A9 = 12.0 V ±0.5 V. The manufacturer code (07h) appears on I/O7–I/O0 when A0 = VIL; device code (20h) appears when A0 = VIH. This mode is used by EPROM programmers to auto-select compatible algorithms.
What UV exposure conditions fully erase HN27C4001G10?
HN27C4001G10 requires ≥15 W·s/cm² total UV dose at 2537 Å wavelength for complete erasure. Standard commercial EPROM erasers (e.g., 4 W lamp, 2.5 cm distance) achieve this in 15–20 minutes. Erasure is confirmed when all outputs read FFh. The HN27C4001G10 quartz window must remain unobstructed; label adhesives or dust reduce effective dose.
Can HN27C4001G10 operate reliably at 70°C ambient temperature?
Yes, HN27C4001G10 is rated for 0 to +70°C operating temperature. Its DC characteristics (ILI ≤2 µA, ISB2 ≤20 µA) and AC timing (tACC ≤100 ns) are guaranteed across this range. At +70°C, standby current increases slightly but remains within 5 µW typ; active current scales predictably with frequency. The HN27C4001G10 CERDIP package provides thermal stability for industrial enclosures.
HN27C4001G10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-CDIP (0.600", 15.24mm) Window
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - UV
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 100 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 32-CDIP
HN27C4001G10 FAQ
1.How can I place an order for HN27C4001G10 through Aetrix?
Please submit a Request for Quotation (RFQ) for HN27C4001G10 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HN27C4001G10 reliable?
The price and inventory of HN27C4001G10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HN27C4001G10 is usually 5 days.
3.What payment methods are accepted for HN27C4001G10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HN27C4001G10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HN27C4001G10?
HN27C4001G10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HN27C4001G10 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HN27C4001G10?
For technical support, including HN27C4001G10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HN27C4001G10 requirements.
6.How does Aetrix verify that HN27C4001G10 is sourced from the original manufacturer or authorized distributors?
All HN27C4001G10 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HN27C4001G10 meets industry standards.
7.What is the process for return or replacement of HN27C4001G10?
All HN27C4001G10 units undergo pre-shipment inspection (PSI). If there is an issue with HN27C4001G10, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HN27C4001G10 part is unused and in its original packaging.
Return procedure for HN27C4001G10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HN27C4001G10 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
