SANYO LC33832PL-80, LC33832P-80, LC33832P-70, LC33832P-10, LC33832ML-80 Datasheet

Ordering number : EN4430C

22897HA (OT)/52595TH (OT)/N1993JN/40893JN A8-9957, 58, 59, No. 4430-1/9

Overview

The LC33832 series is composed of pseudo static RAM
that operates on a single 5 V power supply and is
organized as 32768 words × 8 bits. By using memory
cells each composed of a single transistor and capacitor,
together with peripheral CMOS circuitry, this series
achieves ease of use with high density, high speed, and
low power dissipation. The LC33832 series can easily
accomplish auto-refresh and self-refresh by means of
OE/RFSH input. As with asynchronous static RAM, WE
input uses a system for incorporating input data at the WE
rise, thereby facilitating interfacing with a microcomputer.

The LC33832 series features pin compatibility with 256 K
static RAM (the LC36256A series), and available
packages are the standard 28-pin DIP with widths of 600
mil or 300 mil, and the SOP with a width of 450 mil.

CE-only refresh can be accomplished by selecting address
256 (A0 to A7) within 4 ms.

Features

• 32768 words × 8 bits configuration

• Single 5 V ±10% power supply

• All input and output (I/O) TTL compatible

• Fast access times and low power dissipation

• 4 ms refresh using 256 refresh cycle

• CE-only refresh, auto-refresh, and self-refresh

• Low-power version: 100 µA self-refresh current

• Package
DIP28-pin (600 mil) plastic package: LC33832P, PL
DIP28-pin (300 mil) plastic package: LC33832S, SL
SOP28-pin (450 mil) plastic package: LC33832M, ML

Package Dimensions

unit: mm

3012A-DIP28

unit: mm

3133-DIP28

SANYO: DIP28

[LC33832P, PL]

SANYO: DIP28

[LC33832S, SL]

LC33832P, S, M, PL, SL, ML-70/80/10

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

256 K (32768 words × 8 bits) Pseudo-SRAM

CMOS LSI

Parameter

LC33832P, S, M, PL, SL, ML

-70 -80 -10
CE access time 70 ns 80 ns 100 ns
OE access time 30 ns 35 ns 40 ns
Cycle time 115 ns 130 ns 160 ns

Current drain

Operating 65 mA 60 mA 50 mA
Standby 1 mA/100 µA (L version)

• CE access time/OE access time/Cycle time/Current drain

LC33832P, S, M, PL, SL, ML-70/80/10

No. 4430-2/9

Block Diagram

unit : mm

3158-SOP28

[LC33832M, ML]

SANYO: SOP28

LC33832P, S, M, PL, SL, ML-70/80/10

No. 4430-3/9

Pin Assignment Pin Functions

A0 to A14 Address input

WE Read/Write input

OE/RFSH Output-enable input/ refresh input

CE Chip-enable input

I/O1 to I/O8 Data input/output

V

CC

Power supply

GND Ground

Functional Logic

CE OE WE A0 to A7 A8 to I/O1 State

/RFSH A14 to I/O8

H H X X X HZ Standby

L L H VX VX OUT Read
L H L VX VX IN Write

L H H VX X HZ CE-only refresh
H L X X X HZ Self-refresh
H NP X X X HZ Auto-refresh

H...................High-level input of VIN= 6.5 V to VIH(min)

L....................Low-level input of VIN= VIL(max) to –1.0 V

X....................High- or low-level input

NP.................Negative-polarity pulse input

VX.................“IN” when CE = L is confirmed, then “X”

HZ.................High impedance

IN..................Input state

OUT..............Output state