DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 575

• Manufacturer Part Number: DF71251AD50FPV
• Description: MCU RISC FLASH 32K 8K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Tinyr

Specifications of DF71251AD50FPV

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

16.1.1
Port A is a 16-bit input/output port in the SH7125 and an 8-bit input/output port in the SH7124.
Port A has the following registers. For details on register addresses and register states during each
processing, refer to section 20, List of Registers.
Table 16.1 Register Configuration
16.1.2
PADRL is a 16-bit readable/writable register that stores port A data. Bits PA15DR to PA0DR
correspond to pins PA15 to PA0 (multiplexed functions omitted here) in the SH7125. Bits PA9DR
to PA6DR, PA4DR, PA3DR, PA1DR, and PA0DR correspond to pins PA9 to PA6, PA4, PA3,
PA1, and PA0, respectively (multiplexed functions omitted here) in the SH7124.
When a pin function is general output, if a value is written to PADRL, that value is output directly
from the pin, and if PADRL is read, the register value is returned directly regardless of the pin
state.
When a pin function is general input, if PADRL is read, the pin state, not the register value, is
returned directly. If a value is written to PADRL, although that value is written into PADRL, it
does not affect the pin state. Table 16.2 summarizes port A data register read/write operations.
Register Name
Port A data register L
Port A port register L
Register Descriptions
Port A Data Register L (PADRL)
Abbrevia-
tion
PADRL
PAPRL
R/W
R/W
R
Initial Value
⎯
H'0000
Rev. 5.00 Mar. 06, 2009 Page 555 of 770
H'FFFFD102
H'FFFFD11E
Address
REJ09B0243-0500
Access Size
8, 16
8, 16