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HY62256B Series
32Kx8bit CMOS SRAM
DESCRIPTION
The HY62256B is a high-speed, low power and 32,786 X 8-bits CMOS Static Random Access Memory fabricated using Hyundai's high performance CMOS process technology. It is suitable for use in low voltage operation and battery back-up application. This device has a data retention mode that guarantees data to remain valid at the minimum power supply voltage of 2.0 volt.
FEATURES
• • • • Fully static operation and Tri-state output TTL compatible inputs and outputs Low power consumption Battery backup(L/LL-part) - 2.0V(min.) data retention • Standard pin configuration - 28 pin 600 mil PDIP - 28 pin 330mil SOP - 28 pin 8x13.4 mm TSOP-I (Standard and Reversed) Standby Current(uA) L LL 1mA 100 25 Temperature (°C) 0~70(Normal)
Product Voltage Speed No. (V) (ns) HY62256B 5.0 55/70/85 Note 1. Current value is max.
Operation Current(mA) 8
PIN CONNECTION
A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O1 I/O2 I/O3 Vss 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Vcc /WE A13 A8 A9 A11 /OE A10 /CS I/O8 I/O7 I/O6 I/O5 I/O4
A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O1 I/O2 I/O3 Vss
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
Vcc /WE A13 A8 A9 A11 /OE A10 /CS I/O8 I/O7 I/O6 I/O5 I/O4
/OE A11 A9 A8 A13 /WE Vcc A14 A12 A7 A6 A5 A4 A3
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
A10 /CS I/O8 I/O7 I/O6 I/O5 I/O4 Vss I/O3 I/O2 I/O1 A0 A1 A2
A3 A4 A5 A6 A7 A12 A14 Vcc /WE A13 A8 A9 A11 /OE
14 13 12 11 10 9 8 7 6 5 4 3 2 1
15 16 17 18 19 20 21 22 23 24 25 26 27 28
A2 A1 A0 I/O1 I/O2 I/O3 Vss I/O4 I/O5 I/O6 I/O7 I/O8 /CS A10
PDIP
SOP
TSOP-I(Standard)
TSOP-I(Reversed)
PIN DESCRIPTION
Pin Name /CS /WE /OE A0 ~ A14 I/O1 ~ I/O8 Vcc Vss Pin Function Chip Select Write Enable Output Enable Address Inputs Data Input/Output Power(+5.0V) Ground
A0
BLOCK DIAGRAM
SENSE AMP ROW DECODER ADD INPUT BUFFER I/O1 OUTPUT BUFFER
COLUMN DECODER
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A14 /CS /OE /WE
WRITE DRIVER
MEMORY ARRAY 512x512
I/O8
This document is a general product description and is subject to change without notice. Hyundai Electronics does not assume any responsibility for use of circuits described. No patent licenses are implied. Rev.04 /Jan.99 Hyundai Semiconductor
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CONTROL LOGIC
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HY62256B Series
ORDERING INFORMATION
Part No. HY62256BP HY62256BLP HY62256BLLP HY62256BJ HY62256BLJ HY62256BLLJ HY62256BT1 HY62256BLT1 HY62256BLLT1 HY62256BR1 HY62256BLR1 HY62256BLLR1 Speed 55/70/85 55/70/85 55/70/85 55/70/85 55/70/85 55/70/85 55/70/85 55/70/85 55/70/85 55/70/85 55/70/85 55/70/85 Power L-part LL-part L-part LL-part L-part LL-part L-part LL-part Package PDIP PDIP PDIP SOP SOP SOP TSOP-I Standard TSOP-I Standard TSOP-I Standard TSOP-I Reversed TSOP-I Reversed TSOP-I Reversed
ABSOLUTE MAXIMUM RATING (1)
Symbol Vcc, VIN, VOUT T.