tmp90p802ap ETC-unknow, tmp90p802ap Datasheet - Page 4

• Manufacturer Part Number: tmp90p802ap
• Manufacturer: ETC-unknow

TMP90P802A
4/14
2.2 Pin Names and Functions
The TMP90P802A has MCU mode and PROM mode.
Pin Name
V
P00 ~ P07
P10 ~ P17
P20 ~ P27
/A8 ~ A 15
/D0 ~ D7
/A0 ~ A7
SS
/SCLK
RESET
/WAIT
X1/X2
/INTO
/INT1
/RxD
/TxD
/RTS
/TxD
/WR
NMI
CLK
P31
P32
P33
P35
/RD
P36
P37
P80
P81
/TI4
V
EA
(GND)
CC
No. of pins
8
8
8
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Table 2.2 Pin Names and Functions
I/O 3 states
3 states
Output
Output
Output
Output
Output
Output
Output
Output
Input/
Input
Input
Input
Input
Input
Input
Input
I/O
I/O
I/O
–
–
(1)
Port 0: 8-bit I/O port that allows selection of input/output on byte basis
Data Bus: Also functions as 8-bit bidirectional data bus for external memory
Port 1: 8-bit I/O port that allows selection on byte basis
Addrress Bus: The lower 8 bits address bus for external memory
Port 2: 8-bit I/O port that allows selection on byte basis
Addrress Bus: The uppper 8 bits address bus for external memory
Port 31: 1-bit input port
Receives serial data
Port 32: 1-bit output port
Serial clock output
Port 33: 1-bit output port
Transmits serial data
Port 35: 1-bit output port
Read: Generates strobe signal for reading external memory
Port 36: 1-bit output port
Writes: Generates strobe signal for writing external memory
Port 37: 1-bit input port
Wait: Input pin for connecting slow speed memory or peripheral LSI
Port 80: 1-bit input port
Interrupt request pin 0: Interrupt request pin (Level/rising edge is programmable)
Port 81: 1-bit input port
Interrupt request pin 1: Interrupt request pin (Rising/falling edge is programmable)
Timer input 4: Counter/capture trigger signal for Timer 4
Non-maskable interrupt request pin: Falling edge interrupt request pin
Clock output: Generates clock pulse at 1/4 frequency of clock oscillation. It is Pulled up
internally during resetting.
Connects with V
Reset: Initializes the TMP90P802A (Built-in pull-up resistor)
Pin for quartz crystal or ceramic resonator (1 ~ 12.5MHz)
Power supply (+5V)
Ground (0V)
MCU Mode (The TMP90P802A and the TMP90C802A
are pin compatible).
CC
pin .
Function
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