DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 379

• 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: -

9.1.1
DDR is an 8-bit write-only register that specifies the port input or output for each bit. A read from
the DDR is invalid and DDR is always read as an undefined value.
When the general I/O port function is selected, the corresponding pin functions as an output port
by setting the corresponding DDR bit to 1; the corresponding pin functions as an input port by
clearing the corresponding DDR bit to 0.
The initial DDR values are shown in table 9.3.
Table 9.3
Port
Port A
Other ports
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.
Data Direction Register (PnDDR) (n = 1 to 3, 6, A, B, D to F, H, and I)
Pn7DDR
Startup Mode and Initial Value
W
7
0
Pn6DDR
W
6
0
Startup Mode
External Extended Mode
H'80
Pn5DDR
W
5
0
Pn4DDR
W
4
0
Pn3DDR
W
3
0
Rev. 2.00 Jun. 28, 2007 Page 353 of 864
H'00
Pn2DDR
Single-Chip Mode
H'00
W
2
0
Pn1DDR
W
1
0
Section 9 I/O Ports
REJ09B0341-0200
Pn0DDR
W
0
0