DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 381

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

9.1.4
ICR is an 8-bit readable/writable register that controls the port input buffers.
For bits in ICR set to 1, the input buffers of the corresponding pins are valid. For bits in ICR
cleared to 0, the input buffers of the corresponding pins are invalid and the input signals are fixed
high.
When the pin functions as an input for the peripheral modules, the corresponding bits should be
set to 1. The initial value should be written to a bit whose corresponding pin is not used as an input
or is used as an analog input/output pin.
When PORT is read, the pin state is always read regardless of the ICR value. When the ICR value
is cleared to 0 at this time, the read pin state is not reflected in a corresponding on-chip peripheral
module.
If ICR is modified, an internal edge may occur depending on the pin state. Accordingly, ICR
should be modified when the corresponding input pins are not used. For example, an IRQ input,
modify ICR while the corresponding interrupt is disabled, clear the IRQF flag in ISR of the
interrupt controller to 0, and then enable the corresponding interrupt. If an edge occurs after the
ICR setting, the edge should be cancelled.
The initial value of ICR is H'00.
Bit
Bit Name
Initial Value
R/W
Note: The lower six bits are valid and the upper two bits are reserved for port 6 registers.
The lower four bits are valid and the upper four bits are reserved for port B registers.
Input Buffer Control Register (PnICR) (n = 1 to 3, 5, 6, A, B, D to F, H, and I)
Pn7ICR
R/W
7
0
Pn6ICR
R/W
6
0
Pn5ICR
R/W
5
0
Pn4ICR
R/W
4
0
Pn3ICR
R/W
3
0
Rev. 2.00 Jun. 28, 2007 Page 355 of 864
Pn2ICR
R/W
2
0
Pn1ICR
R/W
1
0
Section 9 I/O Ports
REJ09B0341-0200
Pn0ICR
R/W
0
0