Renesas H8S/2100 Series Hardware Manual page 217

6-bit single-chip microcomputer

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PG1/SCLA/ExIRQ9/TMIY

The pin function is switched as shown below according to the combination of the ICE bit in ICCR

of IIC_2, the IIC2AS bit in IIC2BS of PTCNT1, and the PG1DDR bit. TMRIY and TMCIY are

multiplexed as the TMIY input pin. When the CCLR1 and CCLR0 bits in TCR of TMR_Y are set

to1, the pin functions as the TMIY (TMRIY) input pin. When and external clock is selected by the

CKS2 to CKS0 bits in TCR of TMR_Y, the pin functions as the TMIY (TMCIY) input pin. When

the ISS9 bit in ISSR16 is set to 1 and the IRQ9E bit in IER16 of the interrupt controller is set to 1,

this pin can be used as the ExIRQ9 input pin. SCLA_EN in the following table is expressed by the

following logical expression.

SCLA_EN = ICE·IIC2BS·IIC2AS

Pin function

Note: The output format for SCLA is NMOS output only, and direct bus drive is possible. When

this pin is used as the PG1 output pin, the output format is NMOS push-pull.

PG0/SDAA/ExIRQ8/TMIX

The pin function is switched as shown below according to the combination of the ICE bit in ICCR

of IIC_2, the IIC2AS bit in IIC2BS of PTCNT1, and the PG0DDR bit. TMRIX and TMCIX are

multiplexed as the TMIX input pin. When the CCLR1 and CCLR0 bits in TCR of TMR_X are set

to1, the pin functions as the TMIX (TMRIX) input pin. When and external clock is selected by the

CKS2 to CKS0 bits in TCR of TMR_X, the pin functions as the TMIX (TMCIX) input pin. When

the ISS8 bit in ISSR16 is set to 1 and the IRQ8E bit in IER16 of the interrupt controller is set to 1,

this pin can be used as the ExIRQ8 input pin. SDAA_EN in the following table is expressed by the

following logical expression.

SDAA_EN = ICE·IIC2BS·IIC2AS

Pin function

Note: The output format for SDAA is NMOS output only, and direct bus drive is possible. When

this pin is used as the PG0 output pin, the output format is NMOS push-pull.

PG1 input pin

ExIRQ9 input pin / TMIY input pin

PG0 input pin

ExIRQ8 input pin / TMIX input pin

PG1 output pin

PG0 output pin

Rev. 1.00 May 09, 2008 Page 191 of 954

Section 8 I/O Ports

SCLA I/O pin

SDAA I/O pin

REJ09B0462-0100