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Renesas UPD431000AGZ-70LL-KJH-A
- Part No.:
- UPD431000AGZ-70LL-KJH-A
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
UPD431000AGZ-70LL-KJH-A.pdf
- Description:
- STANDARD SRAM, 128KX8, 70NS
- Quantity:
- Payment:
- Shipping:
Inventory:65,196
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Product details
Overview
UPD431000AGZ-70LL-KJH-A from Renesas Electronics is a 131,072-word × 8-bit (1 Mbit) CMOS static RAM in 32-pin plastic TSOP(I) (8×20 mm, normal bent), with 70 ns maximum access time, 4.5–5.5 V supply voltage, and 0–70 °C operating temperature. It supports dual chip enable (/CE1, CE2), output enable (/OE), and write enable (/WE) for flexible memory expansion in embedded controllers and industrial data loggers.
For engineers reviewing the UPD431000AGZ-70LL-KJH-A datasheet, UPD431000AGZ-70LL-KJH-A pinout, UPD431000AGZ-70LL-KJH-A application, or UPD431000AGZ-70LL-KJH-A equivalent, this page delivers verified specifications, package layout, functional alternatives, and design-critical timing behavior - all confirmed against Renesas Document No. M11657EJEV0DS00 (14th edition, Nov 2009).
Technical Context
The UPD431000AGZ-70LL-KJH-A implements a full static RAM architecture with row/column decoding, sense amplifiers, and input/output data controllers. Its dual chip enable inputs (/CE1 active-low, CE2 active-high) allow hierarchical memory mapping without external logic, while /OE enables bus sharing in multi-peripheral systems.
It operates in three distinct modes: read (with /CE1 low, CE2 high, /OE high, /WE high), write (with /CE1 low, CE2 high, /WE low), and standby (with /CE1 high or CE2 low). Data retention is supported at VCC ≥ 2.0 V using either /CE1 or CE2 control, enabling low-power backup operation in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory organization | 131,072 words × 8 bits (1,048,576 total bits) - supports byte-wide data buses without bit-slicing logic |
| Access time (tAA) | 70 ns max at VCC = 4.5–5.5 V - compatible with 14 MHz bus clocks in legacy microcontroller systems |
| Supply voltage range | 4.5–5.5 V - matches standard TTL/CMOS 5 V logic domains and avoids level-shifting requirements |
| Operating temperature | 0 to 70 °C - qualified for commercial and industrial ambient environments, not extended or automotive grade |
| Standby current (ISB1) | 1–20 μA at VCC ≤ 3.6 V - enables ultra-low-power retention during system sleep states |
| Data retention voltage | 2.0 V min - sustains stored data during brown-out or battery-switchover events |
| Pin count & package | 32-pin plastic TSOP(I), 8×20 mm, normal bent - surface-mount compatible with standard reflow profiles |
Pinout & Package
UPD431000AGZ-70LL-KJH-A uses a 32-pin plastic TSOP(I) package (8×20 mm, normal bent lead configuration) per Renesas drawing S32GZ-50-KJH1-2. Pin 1 index is marked on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address inputs | 17-bit address bus supporting full 131,072-word addressing; no internal multiplexing |
| I/O1–I/O8 | Bi-directional data bus | 8-bit parallel interface; high-impedance when /CE1 high, CE2 low, or /WE low |
| /CE1 | Chip Enable 1 (active-low) | Primary selection signal; device enabled only when low AND CE2 is high |
| CE2 | Chip Enable 2 (active-high) | Secondary selection; must be high for read/write; enables bank selection in multi-chip designs |
| /WE | Write Enable (active-low) | Controls write cycle initiation; I/O pins enter high-Z state when low |
| /OE | Output Enable (active-high) | Enables output drivers during read; allows bus sharing with other peripherals |
| VCC | Power supply | 4.5–5.5 V nominal; decoupling required within 10 mm of pin per Renesas layout guidelines |
| GND | Ground | Dedicated ground reference; tied to PCB ground plane for noise immunity |
| NC | No connection | Pin 9 is unconnected; must remain floating - not to be tied to VCC or GND |
Key Features
| Feature | Design Value |
|---|---|
| Dual chip enable (/CE1, CE2) | Enables seamless memory expansion up to 2× density without external decode logic or glue chips |
| Low-voltage data retention | Maintains valid data at VCC ≥ 2.0 V, supporting battery-backed operation in power-fail scenarios |
| Output enable (/OE) control | Allows direct connection to shared data buses; eliminates need for external tri-state buffers |
| Lead-free packaging (-A suffix) | Complies with RoHS Directive 2011/65/EU; suitable for environmentally regulated production programs |
| 70 ns access with 5 V supply | Meets timing requirements of 8-bit and 16-bit microcontrollers including Z80, 80C51, and early ARM7 derivatives |
Applications
| Industrial Data Logger | Legacy Microcontroller System |
|---|---|
|
Use Scenario: Standalone environmental sensor node recording temperature, humidity, and pressure at 10 Hz for 72 hours. IC Role / Device Role / Timing Role: Primary working memory for firmware execution and real-time sample buffering; retains data during periodic SD card writes. Use Value: 70 ns access ensures zero wait-state operation with 80C51-based controllers; 2.0 V retention enables uninterrupted logging during brief AC power loss. |
Use Scenario: Retrofit upgrade of a 1990s CNC machine controller requiring additional program memory for enhanced motion algorithms. IC Role / Device Role / Timing Role: Expansion RAM mapped into Z80 CPU address space via /CE1/CE2 decoding; replaces slower EPROM + SRAM hybrid. Use Value: Pin-compatible drop-in replacement for older 128K×8 SRAMs; eliminates redesign of address decode logic and PCB layout. |
| Medical Diagnostic Handheld | Point-of-Sale Terminal |
|
Use Scenario: Portable ECG analyzer capturing 12-lead waveforms at 1 kHz, storing 30 seconds of raw data before Bluetooth upload. IC Role / Device Role / Timing Role: High-reliability buffer memory between analog front-end ADC and wireless subsystem; powered from main Li-ion rail. Use Value: 1–20 μA standby current extends battery life between sessions; 0–70 °C rating covers clinical room and transport conditions. |
Use Scenario: Embedded Linux terminal running lightweight POS software with local receipt caching and offline transaction queuing. IC Role / Device Role / Timing Role: Non-volatile cache for transaction logs during network outages; backed by coin-cell battery. Use Value: Dual CE inputs simplify integration with ARM9-based SoM; 32-pin TSOP footprint fits constrained PCB area near main processor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV10248AL-70TLI | Same 128K×8 organization, 70 ns access, but 3.3 V only (2.7–3.6 V); 32-pin TSOP(I), 8×20 mm | Requires level-shifting in 5 V systems; unsuitable for direct replacement without voltage domain redesign | Select only if migrating to 3.3 V platform; verify /CE1/CE2 timing compatibility with host controller |
| CY62128ELL-70ZSXIT | 128K×8, 70 ns, 5 V supply, 32-pin SOIC (not TSOP); higher ICCA (80 mA vs. 70 mA) | Larger SOIC footprint increases PCB area; lacks normal-bent TSOP lead geometry for automated assembly | Use when board layout permits SOIC; avoid if TSOP-specific reflow profile or space constraints apply |
Compared with IS61LV10248AL-70TLI and CY62128ELL-70ZSXIT, UPD431000AGZ-70LL-KJH-A uniquely supports 5 V operation in a compact normal-bent TSOP(I) package with dual CE architecture - making it the only option for legacy 5 V systems requiring minimal board changes and hierarchical memory expansion.
Availability
UPD431000AGZ-70LL-KJH-A is available at Aetrix Electronics and suitable for industrial data loggers, legacy microcontroller upgrades, and medical handheld diagnostics requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for UPD431000AGZ-70LL-KJH-A 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
Renesas Electronics Corporation, formed in 2010 from the merger of NEC Electronics and Renesas Technology, is a global semiconductor leader focused on microcontrollers, analog, power, and memory solutions.
The UPD431000A family was designed for cost-sensitive, high-reliability embedded systems requiring fast, low-power static RAM - particularly in industrial control, test equipment, and legacy computing platforms where pin compatibility and long-lifecycle support are critical.
FAQ
What is the maximum access time specification for UPD431000AGZ-70LL-KJH-A?
The UPD431000AGZ-70LL-KJH-A has a guaranteed maximum address access time (tAA) of 70 ns under recommended operating conditions (VCC = 4.5–5.5 V, TA = 0–70 °C). This value is measured from address valid to valid data output with /OE enabled and applies across all 32-pin TSOP(I) variants including the KJH-A package.
Does UPD431000AGZ-70LL-KJH-A support battery backup operation?
Yes, UPD431000AGZ-70LL-KJH-A supports data retention down to 2.0 V minimum supply voltage (VCCDR1), enabling reliable battery-backup operation. Retention mode is activated by holding /CE1 ≥ VCC − 0.2 V and CE2 ≥ VCC − 0.2 V (or CE2 ≤ 0.2 V), with standby current as low as 1 μA at 3.0 V per Renesas DS M11657EJEV0DS00.
What is the function of the NC pin on UPD431000AGZ-70LL-KJH-A?
Pin 9 on UPD431000AGZ-70LL-KJH-A is designated NC (No Connection) and must remain unconnected - neither tied to VCC nor GND. This pin serves no electrical function and is reserved for mechanical alignment or future product variants; connecting it risks violating absolute maximum ratings per Renesas datasheet Section 8.
Is UPD431000AGZ-70LL-KJH-A compatible with 3.3 V logic interfaces?
No - UPD431000AGZ-70LL-KJH-A is specified only for 4.5–5.5 V operation (LL version). Its VIH minimum is 2.2 V, but DC and AC characteristics (including tAA = 70 ns and ICCA = 70 mA) are validated exclusively at VCC ≥ 4.5 V. Interfacing with 3.3 V controllers requires level translation to avoid timing violations or excessive current draw.
How does the dual chip enable scheme (/CE1 and CE2) work in UPD431000AGZ-70LL-KJH-A?
In UPD431000AGZ-70LL-KJH-A, the device is selected only when /CE1 is low AND CE2 is high. If /CE1 is high OR CE2 is low, the device enters standby (high-impedance I/O, ISB ≤ 20 μA). This two-signal scheme enables hierarchical memory decoding - e.g., CE2 selects a memory bank, and /CE1 selects individual devices within that bank - reducing external logic count.
UPD431000AGZ-70LL-KJH-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Single Port, Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP I
UPD431000AGZ-70LL-KJH-A FAQ
1.How can I place an order for UPD431000AGZ-70LL-KJH-A through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD431000AGZ-70LL-KJH-A 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 UPD431000AGZ-70LL-KJH-A reliable?
The price and inventory of UPD431000AGZ-70LL-KJH-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD431000AGZ-70LL-KJH-A is usually 5 days.
3.What payment methods are accepted for UPD431000AGZ-70LL-KJH-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD431000AGZ-70LL-KJH-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD431000AGZ-70LL-KJH-A?
UPD431000AGZ-70LL-KJH-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD431000AGZ-70LL-KJH-A 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 UPD431000AGZ-70LL-KJH-A?
For technical support, including UPD431000AGZ-70LL-KJH-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD431000AGZ-70LL-KJH-A requirements.
6.How does Aetrix verify that UPD431000AGZ-70LL-KJH-A is sourced from the original manufacturer or authorized distributors?
All UPD431000AGZ-70LL-KJH-A 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 UPD431000AGZ-70LL-KJH-A meets industry standards.
7.What is the process for return or replacement of UPD431000AGZ-70LL-KJH-A?
All UPD431000AGZ-70LL-KJH-A units undergo pre-shipment inspection (PSI). If there is an issue with UPD431000AGZ-70LL-KJH-A, 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 UPD431000AGZ-70LL-KJH-A part is unused and in its original packaging.
Return procedure for UPD431000AGZ-70LL-KJH-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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