M32CSLASH8B datasheet(248/406 Pages) RENESAS

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Under development

M32C/8B Group

17. Serial Interfaces

Preliminary specification

Specifications in this manual are tentative and subject to change.

REJ09B0450-0050 Rev.0.50 Oct 31, 2008

Page 231 of 385

Table 17.11

Pin Settings in I2C Mode

NOTES:

1. Set registers PS0, PS1, and PS3 after setting the other registers.

2. Set the PD9 or PS3 register immediately after the PRC2 bit in the PRCR register is set to 1 (write enable). Do

not generate an interrupt or a DMA or DMACII transfer between these two instructions.

3. P7_0 and P7_1 are N-channel open drain output ports.

Port

Function

Bit Setting

PD6, PD7, PD9

Registers(2)

PSC Register

PSL0, PSL1, PSL3

Registers

PS0, PS1, PS3

Registers(1)(2)

P6_2

SCL0 output

−−

PSL0_2 = 0

PS0_2 = 1

SCL0 input

PD6_2 = 0

−−

PS0_2 = 0

P6_3

SDA0 output

−−

PSL0_3 = 0

PS0_3 = 1

SDA0 input

PD6_3 = 0

−−

PS0_3 = 0

P6_6

SCL1 output

−−

PSL0_6 = 0

PS0_6 = 1

SCL1 input

PD6_6 = 0

−−

PS0_6 = 0

P6_7

SDA1 output

−−

PSL0_7 = 0

PS0_7 = 1

SDA1 input

PD6_7 = 0

−−

PS0_7 = 0

P7_0(3)

SDA2 output

−

PSC_0 = 0

PSL1_0 = 0

PS1_0 = 1

SDA2 input

PD7_0 = 0

−−

PS1_0 = 0

P7_1(3)

SCL2 output

−

PSC_1 = 0

PSL1_1 = 0

PS1_1 = 1

SCL2 input

PD7_1 = 0

−−

PS1_1 = 0

P9_1

SCL3 output

−−

PSL3_1 = 0

PS3_1 = 1

SCL3 input

PD9_1 = 0

−−

PS3_1 = 0

P9_2

SDA3 output

−−

PSL3_2 = 0

PS3_2 = 1

SDA3 input

PD9_2 = 0

−−

PS3_2 = 0

P9_6

SDA4 output

−−

−

PS3_6 = 1

SDA4 input

PD9_6 = 0

−−

PS3_6 = 0

P9_7

SCL4 output

−−

PSL3_7 = 0

PS3_7 = 1

SCL4 input

PD9_7 = 0

−−

PS3_7 = 0

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