UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 112

• 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

112
P12:
PU12:
PM12:
RD:
WR××: Write signal
WR
WR
WR
WR
RD
RD
PORT
PORT
PM
PM
Port register 12
Pull-up resistor option register 12
Port mode register 12
Read signal
OSCSEL/OSCSELS
EXCLK/EXCLKS
OSCCTL
OSCCTL
PM121/PM123
PM122/PM124
(P121/P123)
(P122/P124)
Output latch
Output latch
OSCSELS
OSCSEL/
OSCCTL
PM12
PM12
P12
P12
Figure 5-20. Block Diagram of P121 to P124
CHAPTER 5 PORT FUNCTIONS
User’s Manual U17554EJ4V0UD
OSCSELS
OSCSEL/
OSCCTL
EXCLKS, OSCSELS
EXCLK, OSCSEL/
OSCCTL
P122/X2/EXCLK,
P124/XT2/EXCLKS
P121/X1,
P123/XT1