w77e58 Winbond Electronics Corp America, w77e58 Datasheet - Page 5
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w77e58
Manufacturer Part Number
w77e58
Description
8 Bit Microcontroller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W77E58.pdf
(85 pages)
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Pin Description, continued
* Note: TYPE I: input, O: output, I/O: bi-directional.
P3.0 P3.7
P4.0 P4.3
SYMBOL
TYPE
I/O
I/O
PORT 3: Port 3 is a bi-directional I/O port with internal pull-ups. All bits have
alternate functions, which are described below:
RXD(P3.0) : Serial Port 0 input
TXD(P3.1) : Serial Port 0 output
T0(P3.4)
T1(P3.5)
PORT 4: Port 4 is a 4-bit bi-directional I/O port. The P4.0 also provides the
alternate function WAIT which is the wait state control signal.
INT0 (P3.2) : External Interrupt 0
INT1 (P3.3) : External Interrupt 1
RD (P3.7) : External Data Memory Read Strobe
WR (P3.6) : External Data Memory Write Strobe
: Timer 0 External Input
: Timer 1 External Input
- 5 -
DESCRIPTIONS
Preliminary W77E58
Publication Release Date: March 1999
Revision A1