UPD78F9502MA-CAC-A NEC, UPD78F9502MA-CAC-A Datasheet - Page 19

• Manufacturer Part Number: UPD78F9502MA-CAC-A
• Description: 8BIT MCU, 4K FLASH, 128B RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F9502MA-CAC-A

• Controller Family/series: UPD78F
• No. Of I/o's: 8
• Ram Memory Size: 128Byte
• Cpu Speed: 10MHz
• No. Of Timers: 2
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

2.1 Pin Function List
Note
Caution The P22 and P23/EXCLK pins are pulled down during reset. The P34/RESET pin is pulled up during
Note
Caution The P22 and P23/EXCLK pins are pulled down during reset. The P34/RESET pin is pulled up during
P20
P21
P22
P23
P32
P34
P40, P43
INTP0
INTP1
TOH1
RESET
EXCLK
V
V
DD
SS
(1) Port pins
(2) Non-port pins
Pin Name
Pin Name
Note
Note
For the setting method for pin functions, see CHAPTER 13 OPTION BYTE.
For the setting method for pin functions, see CHAPTER 13 OPTION BYTE.
Note
Note
reset by the reset pin function/power-on clear circuit.
reset by the reset pin function/power-on clear circuit.
Input
Output
Input
Input
I/O
I/O
Input
I/O
I/O
I/O
Port 2.
4-bit I/O port.
Can be set to input or output mode in 1-bit units.
An on-chip pull-up resistor can be connected by setting
software.
Port 3
An on-chip pull-up
resistor can be
connected by setting
software.
Port 4.
2-bit I/O port.
Can be set to input or output mode in 1-bit units.
An on-chip pull-up resistor can be connected by setting
software.
External interrupt input for which the valid edge (rising edge,
falling edge, or both rising and falling edges) can be specified
8-bit timer H1 output
System reset input
External clock input for main system clock
Positive power supply
Ground potential
CHAPTER 2 PIN FUNCTIONS
Preliminary User’s Manual U18681EJ1V0UD
Can be set to input or output mode in
1-bit units.
Input only
Function
Function
After Reset
Input port
Input port
Input port
Input port
After Reset
Input port
Input port
Input port
Input port
Alternate-Function
TOH1
INTP0
EXCLK
INTP1
RESET
P21
P32
P20
P34
P23
Function Pin
Alternate-
Note
Note
Pin
Note
19