SST28VF040A-90-4I-PH データシートの表示（PDF） - Silicon Storage Technology
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SST28VF040A-90-4I-PH Datasheet PDF : 24 Pages
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Successive Reads
An Alternative means for determining an end of a write
operation is by reading the same address for two consecu-
tive data matches.
Product Identification
The Product Identification mode identifies the device as
SST28SF/VF040A and the manufacturer as SST. This
mode may be accessed by hardware and software opera-
tions. The hardware operation is typically used by an exter-
nal programmer to identify the correct algorithm for the
4 Mbit SuperFlash EEPROM
SST28SF040A / SST28VF040A
Data Sheet
SST28SF/VF040A. Users may wish to use the software
operation to identify the device (i.e., using the device ID).
For details see Table 3 for the hardware operation and Fig-
ure 19 for the software operation. The manufacturer and
device IDs are the same for both operations.
TABLE 1: PRODUCT IDENTIFICATION
Manufacturer’s ID
Device ID
SST28SF/VF040A
Address
0000H
0001H
Data
BFH
04H
T1.1 310
FUNCTIONAL BLOCK DIAGRAM
X-Decoder
A18 - A0
Address Buffer & Latches
CE#
OE#
WE#
Control Logic
SuperFlash
Memory
Y-Decoder
I/O Buffers and Data Latches
DQ7 - DQ0
310 ILL B1.1
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
4 3 2 1 32 31 30
5
29
6
28
7
27
8
32-lead PLCC 26
9
25
10
Top View
24
11
23
12
22
13
21
14 15 16 17 18 19 20
A14
A13
A8
A9
A11
OE#
A10
CE#
DQ7
310 ILL F02.3
FIGURE 1: PIN ASSIGNMENTS FOR 32-LEAD PLCC
©2001 Silicon Storage Technology, Inc.
4
S71077-04-000 6/01 310
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