UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 32

• 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

2.2.3 P30 to P33 (port 3)
timer I/O.
(1)
(2)
2.2.4 P40 to P43 (port 4)
register 4 (PM4). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 4 (PU4).
32
P40 to P43 function as a 4-bit I/O port. P40 to P43 can be set to input or output in 1-bit units using port mode
P30 to P33 function as a 4-bit I/O port. These pins also function as pins for external interrupt request input and
The following operation modes can be specified in 1-bit units.
Cautions 1. Be sure to pull the P31/TI002/INTP2 pin down before a reset release, to prevent malfunction.
P30 to P33 function as a 4-bit I/O port. P30 to P33 can be set to input or output in 1-bit units using port mode
register 3 (PM3). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 3 (PU3).
P30 to P33 function as external interrupt request input pins and timer I/O pins.
(a) INTP1 to INTP4
(b) TI002
(c) TI012
(d) TO02
(e) TI51
(f) TO51
Remark P31/TI002/INTP2 and P32/TI012/TO02/INTP3 can be used as on-chip debug mode setting pins when
Port mode
Control mode
These are the external interrupt request input pins for which the valid edge (rising edge, falling edge, or both
rising and falling edges) can be specified.
This is the pin for inputting an external count clock to 16-bit timer/event counter 02 and is also for inputting a
capture trigger signal to the capture registers (CR002, CR012) of 16-bit timer/event counter 02.
This is the pin for inputting a capture trigger signal to the capture register (CR002) of 16-bit timer/event
counter 02.
This is a timer output pin.
This is an external count clock input pin to 8-bit timer/event counter 51.
This is a timer output pin.
2. Connect P31/TI002/INTP2 as follows when writing the flash memory with a flash programmer.
the on-chip debug function is used. For details, refer to CHAPTER 25 ON-CHIP DEBUG FUNCTION.
- P31/TI002/INTP2: Connect to EV
The above connection is not necessary when writing the flash memory by means of self
programming.
CHAPTER 2 PIN FUNCTIONS
User’s Manual U17554EJ4V0UD
SS
via a resistor (10 kΩ: recommended).