h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 267

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Single-Chip Mode:
The function of port 2 pins is switched as shown below according to the combination of the OEm
bit in PWOERB of PWM and the P2nDDR bit.
Notes: n = 7 to 0
9.2.5
Port 2 has a built-in input pull-up MOS that can be controlled by software. This input pull-up
MOS can be used regardless of the operating mode. Table 9.3 summarizes the input pull-up MOS
states.
Table 9.3
Legend:
Off:
On/Off: On when P2DDR = 0 and P2PCR = 1; otherwise off.
9.3
Port 3 is an 8-bit I/O port. Port 3 pins also function as a bidirectional data bus, CompactFlash
bidirectional data bus, wake-up event input, and MCIF input/output pins. Port 3 functions change
according to the operating mode. Port 3 has the following registers.
Reset
Off
P2nDDR
OEm
Pin function
Port 3 data direction register (P3DDR)
Port 3 data register (P3DR)
Port 3 pull-up MOS control register (P3PCR)
m = 15 to 8
Always off.
Port 2 Input Pull-Up MOS
Port 3
Port 2 Input Pull-Up MOS States
Hardware Standby
Mode
Off
P27 to P20 input pins
—
0
Software Standby Mode
On/Off
P27 to P20 input pins
0
Rev. 3.00 Jan 25, 2006 page 215 of 872
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PW15 to PW8 output pins
In Other
Operations
On/Off
Section 9 I/O Ports
REJ09B0286-0300
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