DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 596

• 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: -

16.4.2
The port F data register L (PFDRL) is a 16-bit read-only register that stores port F data. Bits
PF7DR to PF0DR correspond to pins PF7 to PF0 (multiplexed functions omitted here) in the
SH7125 and SH7124.
Any value written into these bits is ignored, and there is no effect on the state of the pins. When
any of the bits are read, the pin state rather than the bit value is read directly. However, when an
A/D converter analog input is being sampled, values of 1 are read. Table 16.8 summarizes port F
data register L read/write operations.
• PFDRL (SH7125, SH7124)
Initial value:
Table 16.8 Port F Data Register L (PFDRL) Read/Write Operations
• PFDRL Bits 7 to 0
Rev. 5.00 Mar. 06, 2009 Page 576 of 770
REJ09B0243-0500
Bit
15 to 8
7
6
5
4
3
2
1
0
Pin Function
General input
ANn input
R/W:
Bit:
Port F Data Register L (PFDRL)
15
R
0
-
Bit Name
⎯
PF7DR
PF6DR
PF5DR
PF4DR
PF3DR
PF2DR
PF1DR
PF0DR
14
R
0
-
13
R
0
-
Initial
Value
All 0
Pin state R
Pin state R
Pin state R
Pin state R
Pin state R
Pin state R
Pin state R
Pin state R
12
R
0
-
11
R
0
-
R/W
R
Read
Pin state
1
10
R
0
-
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
See table 16.8.
R
9
0
-
R
8
0
-
PF7
DR
Write
Ignored (no effect on pin state)
Ignored (no effect on pin state)
R
7
*
PF6
DR
R
6
*
PF5
DR
R
5
*
PF4
DR
R
4
*
PF3
DR
R
3
*
PF2
DR
R
2
*
PF1
DR
R
1
*
PF0
DR
R
0
*