M29W008B データシートの表示（PDF） - STMicroelectronics
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M29W008B Datasheet PDF : 30 Pages
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M29W008T, M29W008B
Figure 2. TSOP Pin Connections
A16 1
40
A15
A14
A13
A12
A11
A9
A8
W
RP 10 M29W008T 31
NC 11 M29W008B 30
RB
A18
A7
A6
A5
A4
A3
A2
A1 20
21
AI02190
Warning: NC = Not Connected.
A17
VSS
NC
A19
A10
DQ7
DQ6
DQ5
DQ4
VCC
VCC
NC
DQ3
DQ2
DQ1
DQ0
G
VSS
E
A0
DESCRIPTION (Cont’d)
the application. Each block can be programmed
and erased over 100,000 cycles.
Instructions for Read/Reset, Auto Select for read-
ing the Electronic Signature or Block Protection
status, Programming, Block and Chip Erase, Erase
Table 1. Signal Names
A0-A19
DQ0-DQ7
Address Inputs
Data Input/Outputs, Command Inputs
E
Chip Enable
G
Output Enable
W
Write Enable
RP
Reset / Block Temporary Unprotect
RB
Ready/Busy Output
VCC
Supply Voltage
VSS
Ground
Suspend and Resume are written to the device in
cycles of commands to a Command Interface using
standard microprocessor write timings. The device
is offered in TSOP40 (10 x 20mm) package.
Organisation
The M29W008 is organised as 1Mb x 8. The mem-
ory uses the address inputs A0-A19 and the Data
Input/Outputs DQ0-DQ7. Memory control is pro-
vided by Chip Enable E, Output Enable G and Write
Enable W inputs.
A Reset/Block Temporary Unprotection RP tri-level
input provides a hardware reset when pulled Low,
and when held High (at VID) temporarily unprotects
blocks previously protected allowing them to be
programed and erased. Erase and Program opera-
tions are controlled by an internal Program/Erase
Controller (P/E.C.). Status Register data output on
DQ7 provides a Data Polling signal, and DQ6 and
DQ2 provide Toggle signals to indicate the state of
the P/E.C operations. A Ready/Busy RB output
indicates the completion of the internal algorithms.
Table 2. Absolute Maximum Ratings (1)
Symbol
Parameter
Value
Unit
TA
Ambient Operating Temperature (3)
–40 to 85
°C
TBIAS
Temperature Under Bias
–50 to 125
°C
TSTG
VIO (2)
Storage Temperature
Input or Output Voltages
–65 to 150
°C
–0.6 to 5
V
VCC
Supply Voltage
–0.6 to 5
V
V(A9, E, G, RP) (2) A9, E, G, RP Voltage
–0.6 to 13.5
V
Notes: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings"
may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other
conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum
Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other
relevant quality documents.
2. Minimum Voltage may undershoot to –2V during transition and for less than 20ns.
3. Depends on range.
2/30
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