UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 35

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

2.2.11 P130 to P132 (port 13)
pins for timer I/O. The following operation modes can be specified in 1-bit units.
(1)
of an on-chip pull-up resistor can be specified by pull-up resistor option register 13 (PU13).
(2) Control mode
P130 functions as a 1-bit output-only port. P131 and P132 function as a 2-bit I/O port. These pins also function as
P131 and P132 can be set to input or output in 1 bit units using port mode register 13 (PM13). P131 and P132 use
(b) EXLVI
(c) X1, X2
(d) EXCLK
(e) XT1, XT2
(f) EXCLKS
P130, P131 and P132 function as timer I/O and serial interface chip select input.
(a) TI003
(b) TI013
(c) TO03
Port mode
This is a potential input pin for external low-voltage detection.
These are the pins for connecting a resonator for high-speed system clock.
When supplying an external clock, input a signal to the X1 pin and input the inverse signal to the X2 pin.
This is an external clock input pin for main system clock.
These are the pins for connecting a resonator for subsystem clock.
When supplying an external clock, input a signal to the XT1 pin and input the inverse signal to the XT2 pin.
This is an external clock input pin for subsystem clock.
This is the pin for inputting an external count clock to 16-bit timer/event counter 03 and is also for inputting a
capture trigger signal to the capture registers (CR003, CR013) of 16-bit timer/event counter 03.
This is the pin for inputting a capture trigger signal to the capture register (CR003) of 16-bit timer/event
counter 03.
This is a timer output pin.
Caution Connect P121/X1 as follows when writing the flash memory with a flash programmer.
Remark The X1 and X2 pins can be used as on-chip debug mode setting pins when the on-chip debug
The above connection is not necessary when writing the flash memory by means of self
programming.
function is used. For details, refer to CHAPTER 25 ON-CHIP DEBUG FUNCTION.
- P121/X1: When using this pin as a port, connect it to V
recommended) (in the input mode) or leave it open (in the output mode).
CHAPTER 2 PIN FUNCTIONS
User’s Manual U17554EJ4V0UD
SS
via a resistor (10 kΩ:
35