Datasheet

Section 10B I/O Ports
(H8S/2695)
Page 532 of 1434 R01UH0166EJ0600 Rev. 6.00
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
Port E
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
Figure 10B.17 Port E Pin Functions (Mode 7)
10B.11.4 MOS Input Pull-Up Function
Port E has a built-in MOS input pull-up function that can be controlled by software. This MOS
input pull-up function can be used in modes 4 to 6 when 8-bit bus mode is selected, or in mode 7,
and can be specified as on or off on an individual bit basis.
When a PEDDR bit is cleared to 0 in modes 4 to 6 when 8-bit bus mode is selected, or in mode 7,
setting the corresponding PEPCR bit to 1 turns on the MOS input pull-up for that pin.
The MOS input pull-up function is in the off state after a power-on reset, and in hardware standby
mode. The prior state is retained by a manual reset or in software standby mode.
Table 10B.21 summarizes the MOS input pull-up states.
Table 10B.21 MOS Input Pull-Up States (Port E)
Modes
Power-On
Reset
Hardware
Standby Mode
Manual
Reset
Software
Standby Mode
In Other
Operations
7 OFF OFF ON/OFF ON/OFF ON/OFF
4 to 6 8-bit bus
16-bit bus OFF OFF OFF
Legend:
OFF: MOS input pull-up is always off.
ON/OFF: On when PEDDR = 0 and PEPCR = 1; otherwise off.