Rev. 5.00, 12/03, page 286 of 1088
Pin
Selection Method and Pin Functions
PF1/
BACK
/
IRQ1
/
CS5
The pin function is switched as shown below according to the operating mode,
and the BRLE bit in BCRL, PF1CS5S bit in PFCR1, and CS25E bit in PFCR2
and PF1DDR bit.
Operating
Mode
Modes 4 to 6
*
1
Mode 7
*
1
BRLE
0
1
—
PF1DDR
0
1
—
0
1
CS25E
—
0
1
—
—
—
PF1CS5S
—
—
0
1
—
—
—
Pin function
PF1
input
pin
PF1
output pin
CS5
output
pin
BACK
output
pin
PF1
input
pin
PF1
output
pin
IRQ1
interrupt input pin
*
2
PF0/
BREQ
/
IRQ0
/
CS4
The pin function is switched as shown below according to the operating mode,
and the BRLE bit in BCRL and PF0CS4S bit in PFCR1 and CS25E bit in
PFCR2 and PF0DDR bit.
Operating
Mode
Modes 4 to 6
*
1
Mode 7
*
1
BRLE
0
1
—
PF0DDR
0
1
—
0
1
CS25E
—
0
1
—
—
—
PF0CS4S
—
—
0
1
—
—
—
Pin function
PF0
input
pin
PF0
output pin
CS4
output
pin
BREQ
output
pin
PF0
input
pin
PF0
output
pin
IRQ0
interrupt input pin
*
2
Notes: 1. Modes 6 and 7 are not available in the ROMless versions.
2. When this pin is used as an external interrupt input, the pin function should be set as a
port (PFn) input pin.
3. Valid only in 8-bit-bus mode.
Summary of Contents for H8S/2318 series
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Page 901: ...Rev 5 00 12 03 page 871 of 1088 A 2 Instruction Codes Table A 2 shows the instruction codes...
Page 1121: ...H8S 2319 Group H8S 2318 Group Hardware Manual REJ09B0089 0500O...