DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 412

• 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: -

Rev. 5.00 Mar. 06, 2009 Page 392 of 770
REJ09B0243-0500
Bit
15 to 13 —
12
11, 10
9
8
Bit Name
POE8F
⎯
POE8E
PIE3
0
0
Initial
value
0
All 0
All 0
R/W
R
R/(W)*
R
R/W*
R/W
2
1
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
POE8 Flag
This flag indicates that a high impedance request has
been input to the POE8 pin.
[Clearing conditions]
•
•
[Setting condition]
•
Reserved
These bits are always read as 0. The write value should
always be 0.
POE8 High-Impedance Enable
This bit specifies whether to place the pins in high-
impedance state when the POE8F bit in ICSR3 is set
to 1.
0: Does not place the pins in high-impedance state
1: Places the pins in high-impedance state
Port Interrupt Enable 3
(Supported only by the SH7125. Write 0 to this bit in the
SH7124.)
This bit enables or disables interrupt requests when the
POE8 bit in ICSR3 is set to 1.
0: Interrupt requests disabled
1: Interrupt requests enabled
By writing 0 to POE8F after reading POE8F = 1
(when the falling edge is selected by bits 1 and 0 in
ICSR3)·
By writing 0 to POE8F after reading POE8F = 1 after
a high level input to POE8 is sampled at Pf/8, Pf/16,
or Pf/128 clock (when low-level sampling is selected
by bits 1 and 0 in ICSR3)
When the input condition set by bits 1 and 0 in
ICSR3 occurs at the POE8 pin