SST30VR041 Datasheet, PDF (1/10 Pages) Silicon Storage Technology, Inc – 4 Mbit ROM + 1 Mbit / 256 Kbit SRAM ROM/RAM Combo

4 Mbit ROM + 1 Mbit / 256 Kbit SRAM ROM/RAM Combo
SST30VR041 / SST30VR043
SST30VR041/0434 Mb Mask ROM (x8) + 1 Mb / 256 Kbit SRAM (x8) Combo
FEATURES:
Preliminary Specifications
• ROM + SRAM ROM/RAM Combo
– SST30VR041: 512K x8 ROM + 128K x8 SRAM
– SST30VR043: 512K x8 ROM + 32K x8 SRAM
• ROM/RAM combo on a monolithic chip
• Equivalent ComboMemory (Flash + SRAM):
SST31LF041A for code development and
pre-production
• Wide Operating Voltage Range: 2.7-3.3V
• Chip Access Time
– SST30VR041 70 ns and 150 ns
– SST30VR043 150 ns
• Low Power Dissipation:
– Standby: 1.0 µW (Typical)
– Operating: 3.0 mW (Typical)
• Fully Static Operation
– No clock or refresh required
• Three state Outputs
• Packages Available
– 32-pin TSOP (8mm x14mm)
PRODUCT DESCRIPTION
The SST30VR041/043 are ROM/RAM combo chips con-
sisting of 4 Mbit Read Only Memory organized as 512
KBytes and a Static Random Access Memory organized
as either 128 or 32 KBytes. Output Enable Input (OE#) is
pin-shared with RAMCS# (RAM Enable Input) signal in
order to maintain the standard 32-pin TSOP package.
The device is fabricated using SST’s advanced CMOS low
power process technology.
The SST30VR041/043 have an output enable input for pre-
cise control of the data outputs. It also has two (2) separate
chip enable inputs for selection of either RAM or ROM and
for minimizing current drain during power-down mode.
The SST30VR041/043 is particularly well suited for use in
low voltage (2.7-3.3V) supplies such as pagers, organizers
and other handheld applications.
FUNCTIONAL BLOCK DIAGRAM
ROMCS#
OE#/RAMCS#
WE#
AMS-A0
RAMCS#
OE#
WE#
RAM
ROMCS#
OE#
ROM
DQ7-DQ0
Note: AMS = Most Significant Address
381 ILL B1.2
©2001 Silicon Storage Technology, Inc.
S71134-02-000 4/01
381
1
The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc.
ComboMemory is a trademark of Silicon Storage Technology, Inc.
These specifications are subject to change without notice.