HD6413003RF Datasheet, PDF (294/715 Pages) Renesas Technology Corp – Microcontroller (MCU)

9.10 Port C
9.10.1 Overview
Port C is an 8-bit input/output port that is also used for DMAC input and output (DREQ₃, DREQ₂,
TEND₃, TEND₂), CS₇ to CS₄ output, and IRQ₇ and IRQ₆ input. Port C has the same set of pin
functions in all operating modes. Figure 9-13 shows the pin configuration of port C.
Pins in port C can drive one TTL load and a 90-pF capacitive load. They can also drive a
darlington transistor pair.
Port C
Port C pins
PC₇ (input/output)/IRQ₇ (input)
PC₆ (input/output)/IRQ₆ (input)
PC₅ (input)/DREQ₃ (input)/CS₇ (output)
PC₄ (input)/TEND₃ (output)/CS₆ (output)
PC₃ (input)/DREQ₂ (input)/CS₅ (output)
PC₂ (input)/TEND₂ (output)/CS₄ (output)
PC₁ (input/output)
PC₀ (input/output)
Figure 9-13 Port C Pin Configuration
9.10.2 Register Descriptions
Table 9-17 summarizes the registers of port C.
Table 9-17 Port C Registers
Address*
Name
H'FFD5
Port C data direction register
H'FFD7
Port C data register
Note: * Lower 16 bits of the address.
Abbreviation R/W
PCDDR
W
PCDR
R/W
Initial Value
H'00
H'00
276