Datasheet

Section 8 I/O Ports
Rev.7.00 Dec. 24, 2008 Page 257 of 698
REJ09B0074-0700
8.10.4 Port E Pull-Up MOS Control Register (PEPCR)
PEPCR controls the on/off state of the port E input pull-up MOS.
Bit Bit Name Initial Value R/W Description
7
6
5
4
3
2
1
0
PE7PCR
PE6PCR
PE5PCR
PE4PCR
PE3PCR
PE2PCR
PE1PCR
PE0PCR
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
When a pin functions as an input port, setting the
corresponding bit to 1 turns on the input pull-up MOS for
that pin.
8.10.5 Pin Functions
Pin Functions of H8S/2218 Group
Port E pins also function as data bus (D7 to D0) I/O pins. The correspondence between the register
specification and the pin function is shown below.
Table 8.64 PE7 Pin Function
Operating Mode Modes 4 to 6 Mode 7
Bus Mode 8-bit bus mode 16-bit bus mode ⎯
PE7DDR 0 1 ⎯ 0 1
Pin Function PE7
input pin
PE7
output pin
D7
input/output pin
PE7
input pin
PE7
output pin
Table 8.65 PE6 Pin Function
Operating Mode Modes 4 to 6 Mode 7
Bus Mode 8-bit bus mode 16-bit bus mode ⎯
PE6DDR 0 1 ⎯ 0 1
Pin Function PE6
input pin
PE6
output pin
D6
input/output pin
PE6
input pin
PE6
output pin