W78354 Просмотр технического описания (PDF) - Winbond
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W78354 Datasheet PDF : 45 Pages
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W78E354
Pin Description, continued
PIN NO.
68P 64P 48P 40P
PIN
NAME
21 19 13 13
P2.2
22 20 14 14
P2.3
8644
(STP)
975
12 10 6
13 11 7
5
P2.4
(SDAC10)
6
P2.5
7 (SDAC11)
P2.6
(SDAC12)
P2.7
(SDAC13)
I/O
TYPE
I/O
31 29 22 20
P3.0
I/O
32 30 23 21
(RXD)
42 40 29 25
P3.1
(TXD)
61 58 43 -
P3.2
(INT0)
23 21 15 -
24 22 16 -
P3.3
43 41 30 - P3.4 (T0)
67 63 - - P3.5 (T1)
P3.6
P3.7
TEST
NAME
D2
D3
D4
D5
D6
D7
-
-
A12
(PSEN)
-
-
-
-
-
FUNCTIONAL DESCRIPTION
General purpose I/O.
Sink/Source current 4 mA/-100 µA.
Alternate function:
P2.3: STP (Self-Test Pattern) output.
P2.4−P2.7: SDAC10−13 outputs.
While outputing special function, P2.3−P2.7's
Sink/Source current is 4mA/-4mA.
---------------------------------------------------------
* In the Flash/RAM-test mode
(when the chip is in reset state):
P2.2−P2.7: D2−D7 data inputs/outputs.
* In the functional test mode
(CPU executes out of ext. program memory):
P2.2−P2.7: D2−D7 program inputs.
General purpose I/O.
Sink/Source current 2 mA/-100 µA.
Alternate function:
P3.0: 8051 serial input port.
P3.1: 8051 serial output port.
P3.2: External interrupt input.
P3.4 and P3.5: Timer/counter 0 and 1 external inputs.
---------------------------------------------------------
* In the Flash/RAM-test mode
(when the chip is in reset state):
P3.2: A12 input.
* In the functional test mode
(CPU executes out of ext. program memory):
P3.2: PSEN output (the read strobe to
external program memory) instead of A12.
Publication Release Date: April 1997
-7-
Revision A1
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