2 Mbit ROM + 1 Mbit / 2Mbit / 256 Kbit SRAM
ROM/RAM Combo
SST30VR021 / SST30VR022 / SST30VR023
Data Sheet
A11
A9
A8
A13
A14
A17
RAMCS#
VDD
WE#
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Standard Pinout
Top View
Die Up
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
380 ILL F01.0
OE#
A10
ROMCS#
DQ7
DQ6
DQ5
DQ4
DQ3
VSS
DQ2
DQ1
DQ0
A0
A1
A2
A3
FIGURE 1: P
IN
A
SSIGNMENTS FOR
32-
PIN
TSOP
TABLE 1: P
IN
D
ESCRIPTION
Symbol
A
MS1
-A
0
Pin Name
Address Inputs, for ROM: A
MS
= A
17
, for RAM: A
MS
=A
16
for SST30VR021
A
17
for SST30VR022
A
14
for SST30VR023
Write Enable Input
Output Enable
RAM Enable Input
ROM Enable Input
Data Input/Output
Power Supply
Ground
T1.2 380
WE#
OE#
RAMCS#
ROMCS#
DQ
7
-DQ
0
V
DD
V
SS
1. A
MS
= Most significant address
©2001 Silicon Storage Technology, Inc.
S71135-02-000 4/01
380
2