m29f002b-70p6tr STMicroelectronics, m29f002b-70p6tr Datasheet - Page 3

• Manufacturer Part Number: m29f002b-70p6tr
• Description: 2 Mbit 256kb X8, Boot Block Single Supply Flash Memory
• Manufacturer: STMicroelectronics

Table 3. Top Boot Block Addresses,
M29F002BT, M29F002BNT
Table 1. Signal Names
SIGNAL DESCRIPTIONS
See Figure 1, Logic Diagram, and Table 1, Signal
Names, for a brief overview of the signals connect-
ed to this device.
Address Inputs (A0-A17). The Address Inputs
select the cells in the memory array to access dur-
ing Bus Read operations. During Bus Write opera-
tions they control the commands sent to the
Command Interface of the internal state machine.
Data Inputs/Outputs (DQ0-DQ7). The Data In-
puts/Outputs output the data stored at the select-
ed address during a Bus Read operation. During
Bus Write operations they represent the com-
mands sent to the Command Interface of the inter-
nal state machine.
Chip Enable (E). The Chip Enable, E, activates
the memory, allowing Bus Read and Bus Write op-
erations to be performed. When Chip Enable is
High, V
Output Enable (G). The Output Enable, G, con-
trols the Bus Read operation of the memory.
Write Enable (W). The Write Enable, W, controls
the Bus Write operation of the memory’s Com-
mand Interface.
A0-A17
DQ0-DQ7
E
G
W
RP
V
V
#
6
5
4
3
2
1
0
CC
SS
IH
(Kbytes)
, all other pins are ignored.
Size
16
32
64
64
64
8
8
Address Inputs
Data Inputs/Outputs
Chip Enable
Output Enable
Write Enable
M29F002BT, M29F002BB:
Reset/Block Temporary Unprotect
M29F002BNT, M29F002BNB:
Not Connected Internally
Supply Voltage
Ground
Address Range
3C000h-3FFFFh
3A000h-3BFFFh
20000h-2FFFFh
10000h-1FFFFh
00000h-0FFFFh
38000h-39FFFh
30000h-37FFFh
M29F002BT, M29F002BB, M29F002BNT, M29F002BNB
Table 4. Bottom Boot Block Addresses,
M29F002BB
Reset/Block Temporary Unprotect (RP). The Re-
set/Block Temporary Unprotect pin can be used to
apply a Hardware Reset to the memory or to tem-
porarily unprotect all blocks that have been pro-
tected. On the M29F002BNT the pin is not
connected internally and this feature is not avail-
able.
A Hardware Reset is achieved by holding Reset/
Block Temporary Unprotect Low, V
t
goes High, V
Read and Bus Write operations after t
or t
Figure 11, Reset/Temporary Unprotect AC Char-
acteristics for more details.
Holding RP at V
protected blocks in the memory. Program and
Erase operations on all blocks will be possible.
The transition from V
t
Reset/Block Temporary Unprotect can be left un-
connected. A weak internal pull-up resistor en-
sures that the memory always operates correctly.
V
supplies the power for all operations (Read, Pro-
gram, Erase etc.).
The Command Interface is disabled when the V
Supply Voltage is less than the Lockout Voltage,
V
cidentally damaging the data during power up,
power down and power surges. If the Program/
Erase Controller is programming or erasing during
this time then the operation aborts and the memo-
ry contents being altered will be invalid.
A 0.1µF capacitor should be connected between
the V
pin to decouple the current surges from the power
supply. The PCB track widths must be sufficient to
carry the currents required during program and
erase operations, I
V
all voltage measurements.
PLPX
PHPHH
CC
LKO
SS
#
6
5
4
3
2
1
0
PLYH
Ground. The V
Supply Voltage. The V
. This prevents Bus Write operations from ac-
. After Reset/Block Temporary Unprotect
CC
.
, whichever occurs last. See Table 15 and
(Kbytes)
Supply Voltage pin and the V
Size
64
64
64
32
16
8
8
IH
, the memory will be ready for Bus
ID
CC4
will temporarily unprotect the
SS
IH
.
to V
Ground is the reference for
Address Range
30000h-3FFFFh
20000h-2FFFFh
10000h-1FFFFh
08000h-0FFFFh
06000h-07FFFh
04000h-05FFFh
00000h-03FFFh
ID
must be slower than
CC
Supply Voltage
IL
, for at least
SS
Ground
PHEL
3/21
CC