UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 103

• 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

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5.2.7 Port 7
using port mode register 7 (PM7). When the P70 to P76 pins are used as an input port, use of an on-chip pull-up
resistor can be specified in 1-bit units by pull-up resistor option register 7 (PU7).
I/O, serial interface data I/O, clock I/O.
Port 7 is an 7-bit I/O port with an output latch. Port 7 can be set to the input mode or output mode in 1-bit units
This port can also be used for external interrupt request input, and clock output pins, buzzer output pins, CAN I/F
Reset signal generation sets port 7 to input mode.
Figures 5-12 to 5-16 show block diagrams of port 7.
Caution To use P74/SO11 and P76/SCK11 as general-purpose ports, set serial operation mode register
P7:
PU7:
PM7:
RD:
WR××: Write signal
WR
WR
WR
RD
10 (CSIM 10) and serial clock selection resister 10 (CSIC10) to the default status (00H).
PORT
PU
PM
Read signal
Port register 7
Pull-up resistor option register 7
Port mode register 7
Output latch
Alternate
function
PM70
PU70
(P70)
PU7
PM7
P7
Figure 5-12. Block Diagram of P70
CHAPTER 5 PORT FUNCTIONS
User’s Manual U17554EJ4V0UD
EV
DD
P-ch
P70/CTxD
103