h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 312

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

• Selectable input/output pins*
Note: *
Figure 13.1 shows a block diagram of the I
pin connections to external circuits. Since I
normal port pins, they have different specifications for permissible applied voltages. For details,
see section 22, Electrical Characteristics.
ExSDAA*
ExSDAB*
Rev. 1.00, 05/04, page 278 of 544
ExSCLA*
ExSCLB*
 Pins, PG4/ExSDAA, PG5/ExSCLA, PG6/ExSDAB, and PG7/ExSCLB, are selectable for
SDA
SCL
the I
2
C bus input/output pin in each channel.
Note: * The program development tool (emulator) does not support this function.
[Legend]
ICCR:
ICMR:
ICSR:
ICDR:
ICXR:
SAR:
SARX:
PS:
PGCTL:
selection
selection
The program development tool (emulator) does not support this function.
PGCTL
circuit
circuit
Pin
Pin
φ
I
I
I
I
I
Slave address register
Slave address register X
Prescaler
Port G control register
2
2
2
2
2
C bus control register
C bus mode register
C bus status register
C bus data register
C bus extended control register
Figure 13.1 Block Diagram of I
canceler
canceler
Noise
Noise
PS
2
2
C bus interface. Figure 13.2 shows an example of I/O
C bus interface I/O pins are different in structure from
Output data
Arbitration
Bus state
decision
decision
control
Clock
control
circuit
circuit
circuit
2
C Bus Interface
SAR, SARX
comparator
generator
Address
Interrupt
ICDRS
ICDRR
ICDRT
ICMR
ICXR
ICCR
ICSR
Interrupt
request