UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 113

• 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

5.2.11 Port 13
using port mode register 13 (PM13). When 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 13 (PU13).
Port 130 is a 1-bit output-only port.
Port 131 and 132 are 2-bit I/O port. P131 and P132 can be set to the input mode or output mode in 1-bit units
Figures 5-21 to 5-23 show block diagrams of port 13.
Remark When reset is effected, P130 outputs a low level. If P130 is set to output a high level before reset is
P13:
RD:
WR××: Write signal
effected, the output signal of P130 can be dummy-output as the CPU reset signal.
WR
Read signal
RD
Port register 13
PORT
Reset signal
P130
Output latch
(P130)
P13
Figure 5-21. Block Diagram of P130
CHAPTER 5 PORT FUNCTIONS
User’s Manual U17554EJ4V0UD
Set by software
P130
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