Section 8
I/O Ports
Rev. 1.00 Mar. 12, 2008 Page 277 of 1178
REJ09B0403-0100
(4)
Pin Functions
The relationship between the register settings and the pin function is shown below.
(a)
Extended Mode (EXPE = 1)
The pin function is switched as shown below according to the P1nDDR bit.
P1nDDR 0
1
ADMXE 0
1
0
1
ABW,
ABW256
X
Either bit is 0
(8/16-bit bus)
Both bits
are 1 (8-bit
bus)
X
Either bit is 0
(8/16-bit
bus)
Both bits
are 1 (8-bit
bus)
Pin
function
P1n input
pin
ADn
input/output
pin
P1n input
pin
An output
pin
Setting
prohibited
P1n output
pin
[Legend] n = 7 to 0, X: Don't care.
(b)
Single-Chip Mode (EXPE = 0)
The pin function is switched as shown below according to the P1nDDR bit.
P1nDDR 0
1
Pin function
P1n input pin
P1n output pin
[Legend] n = 7 to 0
(5)
Port 1 Input Pull-Up MOS
Port 1 has built-in input pull-up MOSs that can be controlled by software. The input pull-up MOS
can be used regardless of the operating mode. Table 8.10 summarizes the input pull-up MOS
states.
Table 8.10 Port 1 Input Pull-Up MOS States
Reset
Hardware Standby
Mode
Software Standby
Mode
In Other Operations
Off Off
On/Off
On/Off
[Legend]
Off: Always
off.
On/Off: On when P1DDR = 0 and P1PCR = 1; otherwise off.
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Page 1226: ...Rev 1 00 Mar 12 2008 Page 1178 of 1178 REJ09B0403 0100...
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Page 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...