CY7C1041G Automotive
4-Mbit (256K words × 16 bit) Static RAM
with Error-Correcting Code (ECC)
4-Mbit (256K words × 16 bit) Static RAM with Error-Correcting Code (ECC)
Features
Functional Description
■
High speed
❐ tAA = 10 ns
■
Temperature range
❐ Automotive-E: –40 °C to 125 °C
❐ Automotive-A: –40 °C to 85 °C
■
CY7C1041G is a high-performance CMOS fast static RAM
automotive part with embedded ECC. This device has a single
Chip Enable (CE) input and is accessed by asserting it LOW.
Data writes are performed by asserting the Write Enable (WE)
input LOW, while providing the data on I/O0 through I/O15 and
the address on A0 through A17 pins. The Byte High Enable (BHE)
and Byte Low Enable (BLE) inputs control write operations to the
upper and lower bytes of the specified memory location. BHE
controls I/O8 through I/O15 and BLE controls I/O0 through I/O7.
Embedded ECC for single-bit error correction[1]
■
Low active and standby currents
❐ Active current ICC = 40-mA typical
❐ Standby current ISB2 = 6-mA typical
■
Operating voltage range: 2.2 V to 3.6 V
■
1.0-V data retention
■
TTL- compatible inputs and outputs
■
Pb-free 48-ball VFBGA and 44-pin TSOP II packages
Data reads are performed by asserting the Output Enable (OE)
input and providing the required address on the address lines.
Read data is accessible on the I/O lines (I/O0 through I/O15).
Byte accesses can be performed by asserting the required byte
enable signal (BHE or BLE) to read either the upper byte or the
lower byte of data from the specified address location.
All I/Os (I/O0 through I/O15) are placed in a HI-Z state when the
device is deselected (CE LOW), or when the control signals are
deasserted (OE, BLE, BHE). Refer to the following logic block
diagram.
Logic Block Diagram – CY7C1041G
MEMORY
ARRAY
ECC DECODER
INPUT BUFFER
SENSE
AMPLIFIERS
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
ROW DECODER
ECC ENCODER
I/O0‐I/O7
I/O8‐I/O15
A10
A11
A12
A13
A14
A15
A16
A17
COLUMN DECODER
BHE
WE
OE
CE2
CE1
BLE
Note
1. This device does not support automatic write-back on error detection.
Cypress Semiconductor Corporation
Document Number: 001-91255 Rev. *G
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised November 25, 2015
