8

Data Sheet

2 Mbit ROM + 1 Mbit / 2Mbit / 256 Kbit SRAM

ROM/RAM Combo

SST30VR021 / SST30VR022 / SST30VR023

©2001 Silicon Storage Technology, Inc.

S71135-02-000

4/01

380

FIGURE

TRC

TAA

Data Valid

380 ILL F04.0

Data Out

Previous Data Valid

Address

TOH

TRC

TAA

TOE

TCO

TLZ(2)

TOH

TOHZ(1)

Data Valid

380 ILL F05.0

Data Out

RAMCS#

High-Z

Address

OE#

Notes: 1. THZ and TOHZ are defined as the time at which the outputs achieve the open circuit condition

and are referenced to the VOH or VOL.

2. At any given temperature and voltage condition THZ(max) is less than TLZ(min) both for a given

device and from device to device.

3. WE# is high for Read cycle.

4. Address valid prior to coincidence with RAMCS# transition low.