h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 145

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

7.5.3
• P52/ExSCK1*/SCL0
Note:
• P51/ExRxD1
Note:
SPS1*
P52ICE*
CKE1
C/A
CKE0
P52DDR
Pin Function
SPS1*
RE
P51DDR
Pin Function
The pin function is switched as shown below according to the combination of the C/A bit in
SMR of SCI_1, the CKE0 and CKE1 bits in SCR, the SPS1 bit*
of IIC_0, the IIC0AS and the IIC0BS bits in PGCTL*
P52ICE = ICE
The pin function is switched as shown below according to the combination of the RE bit in
SCR of SCI_1, the SPS1 bit* in SPSR, and the P51DDR bit.
1
1. When this pin is used as the SCL0 I/O pin by setting 1 to the SPS1 bit of SPSR, the bits
2. The program development tool (emulator) does not support the function of PGCTL.
*
2
Pin Functions
CKE1 and CKE0 in SCR of SCI_1 and the C/A bit in SMR must all be cleared to 0.
SCL0 is an NMOS open-drain output. When set as the P52 output pin or ExSCK1
output pin, this pin is an NMOS push-pull output.
Thus P52ICE is treated as ICE.
The program development tool (emulator) does not support this function.
input pin
P52
—
—
—
0
•
(IIC0AS+IIC0BS)*
P51 input pin
0
output pin
P52
0
—
—
—
1
0
I/O pin
SCL0
—
—
—
—
1
—
0
P51 output pin
2
input pin
P52
0
1
0
output pin
P52
1
0
2
, and the P52DDR bit.
P51 input
0
ExSCK1*
output pin
pin
—
1
0
0
Rev. 1.00, 05/04, page 111 of 544
1
1
in SPSR, the ICE bit in ICCR
1
ExSCK1*
0
output pin
P51 output
—
—
1
pin
1
1
1
ExSCK1*
input pin
—
—
—
1
input pin*
ExRxD1
1
—
1
I/O pin
SCL0
—
1
0
0
0