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Infineon Technologies CY7C199CN-12ZXC
- Part No.:
- CY7C199CN-12ZXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 28-TSSOP (0.465", 11.80mm Width)
- Datasheet:
-
CY7C199CN-12ZXC.pdf
- Description:
- IC SRAM 256KBIT PAR 28TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:4,940
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Product details
Overview
CY7C199CN-12ZXC from Cypress Semiconductor is a 256K-bit (32K × 8) asynchronous CMOS static RAM with 12 ns access time, 5.0V ±10% supply range, TTL-compatible I/O, and automatic CE-controlled power-down mode. It operates across commercial temperature range (0°C to 70°C) and supports high-speed data buffering in microcontroller-based systems requiring deterministic read/write timing.
For engineers reviewing the CY7C199CN-12ZXC datasheet, CY7C199CN-12ZXC pinout, CY7C199CN-12ZXC application, or CY7C199CN-12ZXC equivalent, key selection criteria include access time consistency, low standby current (≤500 µA), data retention at 2.0V, CMOS/TTL interface compatibility, and TSOP I package suitability for space-constrained PCB layouts.
Technical Context
The CY7C199CN-12ZXC implements a fully asynchronous memory interface with independent chip enable (CE), output enable (OE), and write enable (WE) controls. Its internal architecture includes row/column decoders, sense amplifiers, and an automated power-down circuit triggered by CE high, reducing ICC to ≤500 µA in standby.
All timing parameters-including tRC (12 ns), tAA (12 ns), tACE (12 ns), and tPD (12 ns)-are guaranteed under VCC = 4.5–5.5V and TA = 0°C to 70°C. Data retention is maintained at VCC = 2.0V with ICCDR ≤150 µA, enabling battery-backed operation during system sleep modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8 bits - provides byte-wide data bus interface without external data multiplexing |
| Access Time (tAA) | 12 ns - enables direct interfacing with 80 MHz microcontrollers without wait states |
| Supply Voltage Range | 4.5V to 5.5V - compatible with standard 5V logic rails and tolerant of line regulation variance |
| Standby Current (ISB2) | 500 µA max - supports low-power hold mode during CPU idle cycles |
| Data Retention Voltage | 2.0V - allows operation from backup coin cell or supercapacitor during main power loss |
| Input/Output Compatibility | TTL-level - ensures direct connection to legacy 5V microcontrollers and peripherals without level shifters |
| Operating Temperature | 0°C to 70°C - validated for commercial-grade embedded control and instrumentation applications |
Pinout & Package
Package: 28-pin TSOP I (8 × 13.4 mm), lead-free, surface-mountable with standard JEDEC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Input | 15-bit address bus supporting full 32K-word addressing; no internal latching required |
| IO0–IO7 | Bidirectional Data I/O | 8-bit parallel data path; high-impedance when OE or CE inactive |
| CE | Chip Enable | Active-low global enable; triggers automatic power-down when high |
| OE | Output Enable | Active-low control for read-data output gating; independent of WE state |
| WE | Write Enable | Active-low signal initiating write cycle; overlaps with CE LOW to define write window |
| VCC | Power Supply | +5.0V core supply; decoupling required within 10 mm of pin 7 |
| VSS | Ground | Signal and power return; connected to pin 21 for low-inductance reference |
Key Features
| Feature | Design Value |
|---|---|
| Automated CE Power-Down | Reduces ICC to ≤500 µA without external control logic or sleep-mode software overhead |
| 2.0V Data Retention | Preserves stored contents during brown-out or backup power operation without refresh |
| TTL-Compatible I/O | Eliminates need for level translators when interfacing with 5V MCUs, FPGAs, or ASICs |
| 12 ns Access Guarantee | Ensures deterministic timing margins for real-time firmware execution on 8/16-bit controllers |
| Pb-Free TSOP I Package | Meets RoHS compliance requirements and supports reflow soldering per IPC-J-STD-020 |
Applications
| Industrial PLC Data Buffer | Medical Instrumentation Memory |
|---|---|
Use Scenario: Storing real-time sensor acquisition buffers and configuration registers in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: Asynchronous SRAM providing zero-wait-state read/write access synchronized to controller clock edges via CE/OE/WE handshaking. Use Value: 12 ns tAA and tRC ensure sub-microsecond response to ladder logic execution, minimizing I/O scan latency. | Use Scenario: Holding calibration coefficients and waveform history in portable ECG monitors operating from dual power sources. IC Role / Device Role / Timing Role: Nonvolatile data retention buffer retaining critical settings during AC power interruption using 2.0V VDR support. Use Value: 500 µA ISB2 and 2.0V retention enable >48-hour backup from CR2032 coin cell without data loss. |
| Legacy Embedded System Upgrade | Test Equipment Pattern Memory |
Use Scenario: Replacing aging 28-pin DIP SRAMs in field-deployed telecom line cards where board space and thermal profile are constrained. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement for CY7C199 series in TSOP I footprint, maintaining identical address/data/control mapping. Use Value: Identical 28-pin TSOP I layout and TTL I/O allow hardware revision without PCB redesign or firmware changes. | Use Scenario: Storing digital test vectors in automated boundary-scan testers requiring fast, repeatable pattern replay. IC Role / Device Role / Timing Role: High-speed memory array accessed synchronously by pattern generator logic with precise tHZOE/tLZOE control. Use Value: 5 ns tHZOE and 3 ns tLZOE guarantee clean signal edge alignment for 80 Mbps vector streaming without metastability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C4008-12ZIN | 4 Mbit (512K × 8), 12 ns access, 3.3V only, different pinout | Requires voltage translation and PCB layout change; higher density but incompatible footprint | Select only if migrating to 3.3V system and redesigning board layout |
| IS61LV25616AL-12TQLI | 4 Mbit (256K × 16), 12 ns, 3.3V, 44-pin TSOP II | Wider data bus (16-bit), incompatible pin count and I/O mapping; not pin- or function-equivalent | Consider only for new designs needing 16-bit interface and higher capacity |
Compared with AS6C4008-12ZIN and IS61LV25616AL-12TQLI, the CY7C199CN-12ZXC uniquely delivers 32K × 8 organization, 5V TTL compatibility, and 28-pin TSOP I packaging-enabling direct replacement in legacy 5V systems without voltage translation or footprint modification.
Availability
CY7C199CN-12ZXC is available at Aetrix Electronics and suitable for industrial PLC data buffering, medical instrumentation memory, legacy embedded system upgrades, and test equipment pattern storage requiring stable component supply across long-lifecycle deployments.
Supply support for CY7C199CN-12ZXC 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
Cypress Semiconductor, now part of Infineon Technologies, designs high-reliability memory and programmable solutions for industrial, automotive, and communications markets.
The CY7C199CN belongs to Cypress's legacy asynchronous SRAM product line, engineered specifically for pin-compatible replacement and long-term availability in 5V embedded systems where timing predictability and data retention under brown-out conditions are critical.
FAQ
What is the maximum operating current for CY7C199CN-12ZXC at 12 ns speed grade?
The maximum operating supply current (ICC) is 85 mA under worst-case conditions: VCC = 5.5V, f = 1/tRC = 83.3 MHz, and IOUT = 0 mA. This value is measured with all inputs driven and outputs loaded per AC test conditions specified in the datasheet, and reflects peak dynamic consumption during continuous read/write cycling.
Does CY7C199CN-12ZXC support true 2.0V data retention with full functionality?
No-data retention at 2.0V is a low-power hold mode only. The device retains stored data with ICCDR ≤150 µA but does not support read/write operations at VCC = 2.0V. Active operation requires VCC ≥4.5V. Retention timing includes tCDR = 0 ns (immediate entry) and tR = 200 µs (recovery time after VCC restoration).
Can CY7C199CN-12ZXC be used in industrial temperature range (–40°C to +85°C)?
No-the -12ZXC suffix denotes commercial temperature grade (0°C to +70°C). Industrial-grade variants exist (e.g., CY7C199CN-12VI) with identical electrical specs but qualified across –40°C to +85°C and higher reliability screening. Using -12ZXC outside 0°C–70°C violates specification limits and may cause timing violations or data corruption.
Is the TSOP I package of CY7C199CN-12ZXC RoHS-compliant and lead-free?
Yes-the "Z" in -12ZXC explicitly indicates lead-free (Pb-free) construction per JEDEC J-STD-020, with matte tin finish on all leads. The TSOP I package meets RoHS Directive 2011/65/EU and has been qualified for standard Pb-free reflow profiles up to 260°C peak temperature, with MSL Level 3 moisture sensitivity rating.
CY7C199CN-12ZXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 28-TSSOP (0.465", 11.80mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSOP I
CY7C199CN-12ZXC FAQ
1.How can I place an order for CY7C199CN-12ZXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C199CN-12ZXC 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 CY7C199CN-12ZXC reliable?
The price and inventory of CY7C199CN-12ZXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C199CN-12ZXC is usually 5 days.
3.What payment methods are accepted for CY7C199CN-12ZXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C199CN-12ZXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C199CN-12ZXC?
CY7C199CN-12ZXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C199CN-12ZXC 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 CY7C199CN-12ZXC?
For technical support, including CY7C199CN-12ZXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C199CN-12ZXC requirements.
6.How does Aetrix verify that CY7C199CN-12ZXC is sourced from the original manufacturer or authorized distributors?
All CY7C199CN-12ZXC 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 CY7C199CN-12ZXC meets industry standards.
7.What is the process for return or replacement of CY7C199CN-12ZXC?
All CY7C199CN-12ZXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C199CN-12ZXC, 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 CY7C199CN-12ZXC part is unused and in its original packaging.
Return procedure for CY7C199CN-12ZXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C199CN-12ZXC Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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Microchip Technology
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Microchip Technology
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Microchip Technology
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AT24C08C-STUM-T
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