UPD784938 Datasheet, PDF (127/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 6 PORT FUNCTIONS
6.3.1 Hardware configuration
The port 1 hardware configuration is shown in Figures 6-9 to 6-12.
Figure 6-9. P12 (Port 1) Block Diagram
WRPUOL
RDPUOL
Pull-up resistor option register L
PUOL1
WRPM1
RDPM1
WRPMC1
Internal
bus
RDPMC1
WRP1
RDP1
Port 1 mode register
PM12
Port 1 mode control register
PMC12
External
SCK2
Output latch
SCK2
output
P12
Selector
VDD
P12
ASCK2,
SCK2 input
Preliminary User’s Manual U13987EJ1V0UM00
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