r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 670

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
• PF1/UCAS/DQMU/IRQ14-A/SSCK0-C (H8S/2426 Group and H8S/2426R Group)
• Modes 1, 2, 4, and 7 (EXPE = 1)
• Mode 7 (EXPE = 0)
Notes: 1. IRQ14 input when the ITS14 bit in ITSR is 0.
Legend:
: Pin is not used by the SSU (can be used as I/O port)
Rev. 1.00 Sep. 19, 2008 Page 642 of 1270
REJ09B0466-0100
Areas 2 to 5
SSU settings
PF1DDR
Pin function
Areas 2 to 5
SSU settings
PF1DDR
Pin function
SSUMS
MSS
SCKS
Pin state
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, bits MSS and SCKS in SSCRH and bit SSUMS in SSCRL of the SSU, bits
RMTS2 to RMTS0 in DRAMCR of the bus controller, bits SSCK0S1 and SSCK0S0 in
PFCR5, and bit PF1DDR.
2. SSCK0-C input when SSCK0S1 and SSCK0S0 = B'10 in PFCR5, and SSUMS, MSS,
3. SSCK0-C output when SSCK0S1 and SSCK0S0 = B'10 in PFCR5, and SSUMS, MSS,
and SCKS = B'001 or B'101.
and SCKS = B'×11.
Any of areas 2 to 5 is
DRAM/synchronous
DQMU*

DRAM space
UCAS output
0
PF1 input
Can be used as I/O port
0
0


3
output
Input
1
0
Can be used as I/O port
PF1 input

0
PF1 output
0
IRQ14-A interrupt input*
IRQ14-A interrupt input*
1
1
SSCK pin settings
Output
1
Areas 2 to 5 are all normal space
PF1 output

1
SSCK0-C input*

0
Input state
Input state
0
0
SSCK0-C
input*
1
1
Input
0
1
2
2
1
SSCK0-C output*

Output state
0
Output state
SSCK0-C
output*

1

Output
3
1
3