HD6473847RHV Datasheet, PDF (233/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 8 I/O Ports
8.5.2 Port Control Register 7 (PCR7)
PCR7 controls whether each of the port 7 pins functions as an input pin or output pin.
Initial
Bit
Bit Name Value R/W Description
7
PCR77 0
6
PCR76 0
5
PCR75 0
4
PCR74 0
3
PCR73 0
2
PCR72 0
W
Setting a PCR7 bit to 1 makes the corresponding pin an
W
output pin, while clearing the bit to 0 makes the pin an
input pin. The settings in PCR7 and in PDR7 are valid
W
only when the corresponding pin is designated by the
W
SGS3 to SGS0 bits in LPCR as a general I/O pin.
W
PCR7 is a write-only register. Bits 7 to 0 are always read
W
as 1.
1
PCR71 0
W
0
PCR70 0
W
8.5.3 Pin Functions
The port 7 pin functions are shown below.
• P77/SEG24 to P74/SEG21 pins
The pin function depends on the combination of bit PCR7n in PCR7 and bits SGS3 to SGS0 in
LPCR.
SGS3 to
SGS0
Other than B'0110, B'0111, B'1000, B'1001,
B'1010, B'1011, B'1100, B'1101
PCR7n
0
1
Pin Function
P7n input pin
P7n output pin
Legend: *: Don't care.
(n = 7 to 4)
B'0110, B'0111, B'1000, B'1001,
B'1010, B'1011, B'1100, B'1101
*
SEGn+17 output pin
Rev. 7.00 Mar. 08, 2010 Page 201 of 510
REJ09B0024-0700