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Renesas HN27C4096AG10
- Part No.:
- HN27C4096AG10
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 40-CDIP (0.600", 15.24mm) Window
- Datasheet:
-
HN27C4096AG10.pdf
- Description:
- IC EPROM 4MBIT PARALLEL 40CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:215
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Product details
Overview
HN27C4096AG10 from Hitachi is a 4-Mbit (262,144-word × 16-bit) UV-erasable and electrically programmable ROM with 100 ns maximum access time, +12.5 V programming voltage, and TTL-compatible I/O for read/program modes. It operates at 5 V ±10% supply, supports page and word programming, and targets high-speed 16-bit microcomputer systems such as those based on the Intel 80286 or Motorola 68020.
For engineers reviewing the HN27C4096AG10 datasheet, HN27C4096AG10 pinout, HN27C4096AG10 application, or HN27C4096AG10 equivalent, this device requires attention to VPP sequencing (VCC before VPP), A9 high-voltage setup for identifier mode, JEDEC-standard 40-pin CERDIP packaging, and UV erasure at ≥15 W·sec/cm² under 2537 Å light.
Technical Context
The HN27C4096AG10 implements a 2,048 × 2,048 memory matrix with X- and Y-decoders, supporting three distinct programming algorithms: fast high-reliability page programming (50 µs CE pulse width), fast high-reliability word programming, and optional page+verify hybrid mode. Its dual-voltage operation uses 5 V for read/standby and 6.25 V / 12.5 V for programming.
Pin-level control enables multiple operational modes-including Read, Standby, Output Disable, Page Program Set, Page Data Latch, Page Program, Page Program Verify, Word Program, Program Verify, Identifier, and Page Program Reset-each defined by specific combinations of CE, OE, A9, VPP, and VCC states per JEDEC DG-40A timing tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 4 Mbit (262,144 × 16-bit); provides full 16-bit data bus interface for 80286/68020 systems |
| Access time (max) | 100 ns; enables direct interfacing with 10 MHz CPU buses without wait states |
| Programming voltage | +12.5 V DC on VPP; requires strict sequencing (VCC applied before VPP, removed after) |
| Standby current | 5 µW typical; allows low-power retention in system suspend modes |
| Operating current | 35 mW/MHz typical active power; scales linearly with bus activity frequency |
| UV erasure dose | ≥15 W·sec/cm² at 2537 Å; ensures full bit reset to logic '1' after quartz window exposure |
| I/O compatibility | TTL input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.2 V) and output drive (VOL ≤ 0.45 V @ 2.1 mA) |
Pinout & Package
HN27C4096AG10 is packaged in a 40-pin ceramic dual in-line package (CERDIP, JEDEC DG-40A, 600-mil width), featuring a quartz UV-erasure window. Pin 1 is index-marked; pins are arranged in two parallel rows with VCC (pin 40), VSS (pins 20 and 39), CE (pin 2), OE (pin 20), VPP (pin 1), and address/data multiplexing disabled (dedicated A0–A17 and I/O0–I/O15).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address inputs | 18-bit address bus supporting 262,144-word addressing; no internal latching |
| I/O0–I/O15 | Bidirectional data bus | 16-bit parallel interface; TTL-compatible during both read and program modes |
| CE | Chip enable | Active-low selection; must be stable before address setup for valid read/program initiation |
| OE | Output enable | Active-low output gating; used for tristate control and high-voltage mode entry (VH = 12.0 V ±0.5 V) |
| VPP | Programming power | +12.5 V DC input; critical for page/word programming; must not exceed 13 V including overshoot |
| VCC | Supply voltage | +5 V ±10% for read/standby; +6.25 V ±0.25 V for programming; must be applied before VPP |
| VSS | Ground | Signal and power reference; two dedicated pins (20 and 39) for noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| Page programming mode | Reduces total programming time via 50 µs CE pulses and internal data latching-no external byte-by-byte strobing required |
| Device identifier mode | Reads manufacturer code (07h) and device code (A2h) via I/O0–I/O15 when A9 = 12.0 V; enables auto-algorithm selection in programmers |
| UV erasability | Full array reset to '1's after ≥15 W·sec/cm² UV exposure through quartz window; supports unlimited reprogramming cycles |
| Low-power standby | 5 µW typical consumption enables battery-backed retention in embedded controllers without significant drain |
| JEDEC-compliant pinout | 40-pin DG-40A footprint ensures compatibility with standard EPROM sockets and programming adapters |
Applications
| Industrial Control Firmware Storage | Legacy Microcomputer Boot ROM |
|---|---|
Use Scenario: Storing fixed ladder logic firmware in PLC modules requiring field-upgradable but non-volatile storage. IC Role / Device Role / Timing Role: Non-volatile boot memory mapped to CPU address space; delivers 16-bit instructions at ≤100 ns latency. Use Value: UV erasure enables firmware updates in manufacturing or service depots without board replacement. |
Use Scenario: Providing BIOS and initialization code for 16-bit industrial PCs using Intel 80286 processors. IC Role / Device Role / Timing Role: Primary boot ROM accessed during power-on reset sequence; synchronized to CPU clock via OE/CE timing. Use Value: 100 ns access time eliminates wait states, maximizing instruction fetch bandwidth for deterministic boot timing. |
| Test Equipment Calibration Data | Military Avionics Configuration Memory |
Use Scenario: Holding calibrated sensor offset/gain coefficients in automated test systems where recalibration occurs quarterly. IC Role / Device Role / Timing Role: Static configuration memory read during instrument startup; isolated from volatile RAM sections. Use Value: CERDIP packaging provides hermetic sealing and temperature stability (0°C to +70°C) for lab-grade accuracy. |
Use Scenario: Storing flight-critical configuration tables in legacy avionics subsystems certified to MIL-STD-883 Class B. IC Role / Device Role / Timing Role: Radiation-tolerant non-volatile storage; accessed only during pre-flight initialization. Use Value: UV erasure allows secure data sanitization prior to equipment decommissioning or reassignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM27C4096-12DC | 120 ns access time; same 4-Mbit ×16 organization; 5 V/12.5 V operation; 40-pin CERDIP | Slower timing margin; requires wait-state insertion on 10 MHz 80286 buses | Select if system timing budget permits 20 ns longer access or if AMI's qualification pedigree is mandated |
| MX27C4096PC-10 | 100 ns access; identical pinout and voltage specs; manufactured by Macronix; RoHS-compliant variant available | No UV window-requires electrical erasure (not supported); limited to one-time-programmable use unless UV-erasable version specified | Choose only if UV erasure is unnecessary and lead-free compliance is required for new designs |
Compared with HN27C4096AG10, AM27C4096-12DC trades speed for broader second-source availability, while MX27C4096PC-10 offers identical timing but lacks UV erasability-making HN27C4096AG10 the sole choice when field reprogrammability via UV exposure is mandatory.
Availability
HN27C4096AG10 is available at Aetrix Electronics and suitable for industrial control firmware storage, legacy microcomputer boot ROM, test equipment calibration data, and military avionics configuration memory requiring stable component supply across extended product lifecycles.
Supply support for HN27C4096AG10 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 Ltd. (now part of Renesas Electronics Corporation) was a Japanese multinational conglomerate specializing in semiconductor memory, microcontrollers, and industrial systems.
The HN27C4096AG10 belongs to Hitachi's high-speed CMOS EPROM family, designed specifically for 16-bit microcomputer systems demanding sub-120 ns access, low active power, and field-reprogrammable firmware storage.
FAQ
What is the correct power sequencing for programming the HN27C4096AG10?
For reliable programming of the HN27C4096AG10, VCC must be applied before VPP and removed after VPP. Specifically, apply +5 V (or +6.25 V) to VCC first, then +12.5 V to VPP. Reversing this order risks device damage or unreliable programming. The HN27C4096AG10 datasheet specifies that VPP must not exceed 13 V, including transient overshoot, and that installation/removal while VPP is active may impair long-term reliability.
Does the HN27C4096AG10 support both page and word programming modes?
Yes, the HN27C4096AG10 supports three distinct programming methods: fast high-reliability page programming (with 50 µs CE pulses), fast high-reliability word programming, and an optional hybrid page+verify mode. Each mode uses the same +12.5 V VPP supply but differs in address/data handling and verification strategy. The HN27C4096AG10 achieves full programming in under 3.5 seconds using page mode, significantly faster than traditional byte-by-byte approaches.
How is the device identifier mode activated on the HN27C4096AG10?
The device identifier mode on the HN27C4096AG10 is activated by applying 12.0 V ± 0.5 V to pin A9 while holding CE and OE low (VIL), VCC at 5.0 V ±10%, and all other address lines (A1–A8, A10–A17) low. In this state, I/O0–I/O15 output the manufacturer code (07h) and device code (A2h). This mode enables automatic algorithm selection in compatible programmers and confirms genuine Hitachi silicon in the HN27C4096AG10.
What UV exposure conditions are required to fully erase the HN27C4096AG10?
The HN27C4096AG10 requires ultraviolet light at 2537 Å wavelength with a minimum integrated dose of 15 W·sec/cm² for complete erasure. Typical erasure time is 15–20 minutes using commercial EPROM erasers with 254 nm lamps positioned 25 mm from the quartz window. After erasure, all memory locations read as logic '1'. The HN27C4096AG10 must be erased before initial programming and between reprogramming cycles to ensure data integrity.
Is the HN27C4096AG10 pin-compatible with other 4-Mbit EPROMs in 40-pin CERDIP packages?
The HN27C4096AG10 follows JEDEC DG-40A pinout standards and shares identical signal assignments (A0–A17, I/O0–I/O15, CE, OE, VPP, VCC, VSS) with industry-standard 4-Mbit ×16 EPROMs like the AMD AM27C4096 and Intel 27C4096. However, timing parameters (e.g., tACC = 100 ns), programming voltage tolerances, and identifier codes differ. While socket-compatible, full functional substitution requires validation of AC/DC characteristics and programming algorithm compatibility for the HN27C4096AG10.
HN27C4096AG10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 40-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:
- 256K x 16
- 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:
- 40-CDIP
HN27C4096AG10 FAQ
1.How can I place an order for HN27C4096AG10 through Aetrix?
Please submit a Request for Quotation (RFQ) for HN27C4096AG10 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 HN27C4096AG10 reliable?
The price and inventory of HN27C4096AG10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HN27C4096AG10 is usually 5 days.
3.What payment methods are accepted for HN27C4096AG10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HN27C4096AG10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HN27C4096AG10?
HN27C4096AG10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HN27C4096AG10 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 HN27C4096AG10?
For technical support, including HN27C4096AG10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HN27C4096AG10 requirements.
6.How does Aetrix verify that HN27C4096AG10 is sourced from the original manufacturer or authorized distributors?
All HN27C4096AG10 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 HN27C4096AG10 meets industry standards.
7.What is the process for return or replacement of HN27C4096AG10?
All HN27C4096AG10 units undergo pre-shipment inspection (PSI). If there is an issue with HN27C4096AG10, 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 HN27C4096AG10 part is unused and in its original packaging.
Return procedure for HN27C4096AG10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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