SH7021 datasheet(254/509 Pages) RENESAS

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Bits 6–4 (I/O control B2–B0 (IOB2–IOB0)): IOB2–IOB0 selects the GRB function.

Bit 6:

IOB2

Bit 5:

IOB1

Bit 4:

IOB0

GRB Function

GRB is an

Compare match with pin output disabled (initial value)

output compare

0 output at GRB compare match*1

1 output at GRB compare match*1

Output toggles at GRB compare match (1 output for

channel 2 only)*1,*2

GRB is an

GRB captures rising edge of input

input capture

GRB captures falling edge of input

GRB captures both edges of input

Notes: 1. After reset, the value output is 0 until the first compare match occurs.

2. Channel 2 has no compare-match driven toggle output function. If it is set for toggle, 1

is automatically selected as the output.

•

Bit 3 (reserved): Bit 3 always reads as 1. The write value should always be 1.

•

Bits 2–0 (I/O control A2–A0 (IOA2–IOA0)): IOA2–IOA0 select the GRB function.

Bit 2:

IOA2

Bit 1:

IOA1

Bit 0:

IOA0

GRA Function

GRA is an

Compare match with pin output disabled (initial value)

output compare

0 output at GRA compare match*1

1 output at GRA compare match*1

Output toggles at GRA compare match (1 output for

channel 2 only)*1,*2

GRA is an

GRA captures rising edge of input

input capture

GRA captures falling edge of input

GRA captures both edges of input

Notes: 1. After reset, the value output is 0 until the first compare match occurs.

2. Channel 2 has no compare-match driven toggle output function. If it is set for toggle, 1

is automatically selected as the output.

SH7021 Datasheet(PDF) 254 Page - Renesas Technology Corp

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