h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 304

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 I/O Ports
8.15.3
The port E and port F pins have only one special function.
8.15.4
Port E and port F have a built-in MOS input pull-up function that can be controlled by software.
This MOS input pull-up function can be switched as on or off on a bit-by-bit basis.
When a PEDDR or PFDDR bit is cleared to 0, setting the corresponding PEODR or PFODR bit to
1 will turn on the MOS input pull-up for that pin.
The MOS input pull-up function is off after a reset and in hardware standby mode. The prior state
is retained when in software standby mode.
Table 8.30 is a summary of the MOS input pull-up states.
Table 8.30 MOS Input Pull-Up States (Port E and port F)
Mode
1 to 3
Legend:
Off:
On/Off: On when PEDDR = 0 and PEODR = 1 (PFDDR = 0 and PFODR = 1); otherwise off.
Rev. 3.00 Jan 18, 2006 page 276 of 1044
REJ09B0280-0300
MOS input pull-up is always off.
Pin Functions
MOS Input Pull-Up Function
Reset
Off
Hardware
Standby Mode
Off
Software
Standby Mode
On/Off
Other
Operations
On/Off