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SST30VR021-500-E-KH Datasheet

  • SST30VR021-500-E-KH

  • SRAM/ROM

  • 145.13KB

  • 12頁

  • ETC

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2 Megabit ROM + 1 Megabit SRAM ROM/RAM Combo
SST30VR021
Data Sheet
FEATURES:
鈥?Organized as 256K x8 ROM + 128K x8 SRAM
鈥?ROM/RAM combo on a monolithic chip
鈥?Equavalent ComboMemory (Flash + SRAM):
SST31LF021E for code development and
pre-production
鈥?Wide Operating Voltage Range: 2.7-3.3V
鈥?Chip Access Time
鈥?2.7V Operation: 500 ns (Max.)
鈥?Low Power Dissipation:
鈥?Standby
3.0V Operation: 3 碌W (Typical)
鈥?Operating
3.0V Operation: 10 mW (Typical)
鈥?Fully Static Operation
鈥?No clock or refresh required
鈥?Three state Outputs
鈥?Packages Available
鈥?32-Pin TSOP (8mm x 13.4mm)
鈥?32-Pin TSOP (8mm x 14mm)
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PRODUCT DESCRIPTION
The SST30VR021 is a ROM/RAM combo chip consist-
ing of 2 Mbit Read Only Memory organized as 256
KBytes and a 1 Mbit Static Random Access Memory
organized as 128 KBytes.
The device is fabricated using SST鈥檚 advanced CMOS
low power processing technology.
The SST30VR021 has an output enable input for precise
control of the data outputs. It also has two separate chip
enable inputs for selection of either ROM or RAM and for
minimizing current drain during power-down mode.
The SST30VR021 is particularly well suited for use with
low voltage supplies (2.7-3.3V) such as pagers, organiz-
ers and other handheld applications.
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F
UNCTIONAL
B
LOCK
D
IAGRAM OF
SST30VR021 ROM/RAM C
OMBO
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11
12
Data Buffer
DQ7-DQ0
RAMCS#
ROMCS#
OE#
WE#
RAMCS#
Control
Circuit
OE#
WE#
RAM
Address Buffer
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14
15
ROMCS#
OE#
AMS-A0
ROM
Note: AMS = Most Significant Address
379 ILL B1.2
16
漏 2000 Silicon Storage Technology, Inc.
The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc. ComboMemory is a trademark of
379-04 2/00
1
Silicon Storage Technology, Inc. These specifications are subject to change without notice.
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