UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 30

• 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 Description of Pin Functions
2.2.1 P00, P01, P05, P06 (port 0)
select input.
(1)
(2)
30
P00, P01, P05 and P06 function as a 4-bit I/O port. These pins also function as timer I/O and serial interface chip
The following operation modes can be specified in 1-bit units.
P00, P01, P05 and P06 function as 4-bit I/O port. P00, P01, P05 and P06 can be set to input or output in 1-bit
units using port mode register 0 (PM0). Use of an on-chip pull-up resistor can be specified by pull-up resistor
option register 0 (PU0).
P00, P01, P05 and P06 function as timer I/O, and serial interface chip select input.
(a) TI000, TI001
(b) TI010, TI011
(c) TO00, TO01
(d) SSI11
Port mode
Control mode
These are the pins for inputting an external count clock to 16-bit timer/event counters 00 and 01 and are also
for inputting a capture trigger signal to the capture registers (CR000, CR010 or CR001, CR011) of 16-bit
timer/event counters 00 and 01.
These are the pins for inputting a capture trigger signal to the capture register (CR000 or CR001) of 16-bit
timer/event counters 00 and 01.
These are timer output pins.
This is the serial interface chip select input pin.
CHAPTER 2 PIN FUNCTIONS
User’s Manual U17554EJ4V0UD