HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 288

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 8 I/O Ports
8.7.4
Port A 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 1, 2, 3, 6, and 7, and cannot be used in modes 4 and 5.
MOS input pull-up can be specified as on or off on an individual bit basis.
When a PADDR bit is cleared to 0, setting the corresponding PAPCR 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 after a manual reset, and in software standby mode.
Note: Modes 2, 3, 6, and 7 cannot be used in the H8S/2240.
Table 8.12 summarizes the MOS input pull-up states.
Table 8.12 MOS Input Pull-Up States (Port A)
Modes
1 to 3, 6, 7
4, 5
Legend:
OFF:
ON/OFF: On when PADDR = 0 and PAPCR = 1; otherwise off.
Rev.3.00 Mar. 26, 2007 Page 246 of 772
REJ09B0355-0300
MOS Input Pull-Up Function
MOS input pull-up is always off.
PA
PA
3
3
to PA
to PA
0
0
Power-On
Reset
OFF
Hardware
Standby Mode
OFF
Manual
Reset
ON/OFF ON/OFF
OFF
Software
Standby Mode
OFF
In Other
Operations
ON/OFF
OFF