DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 121

• 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: -

Note:
6.3.4
Interrupt priority registers are twelve 16-bit readable/writable registers that set priority levels from
0 to 15 for interrupts except NMI. For the correspondence between interrupt request sources and
IPR, refer to table 6.3. Each of the corresponding interrupt priority ranks are established by setting
a value from H'0 to H'F in each of the four-bit groups 15 to 12, 11 to 8, 7 to 4 and 3 to 0. Reserved
bits that are not assigned should be set H'0 (B'0000).
Initial value:
Bit
0
R/W:
Bit:
* The initial value is 1 when the level on the corresponding IRQ pin is high, and 0 when
R/W
Interrupt Priority Registers A to F and H to M (IPRA to IPRF and IPRH to
IPRM)
15
0
Bit Name
IRQ0F
the level on the pin is low.
R/W
14
IPR[15:12]
0
R/W
13
0
Initial
Value
0
R/W
12
0
R/W
11
0
R/W
R/W
R/W
10
0
IPR[11:8]
R/W
Description
Indicates the status of an IRQ0 interrupt request.
•
0: An IRQ0 interrupt has not been detected
1: An IRQ0 interrupt has been detected
•
0: An IRQ0 interrupt has not been detected
1: An IRQ0 interrupt request has been detected
9
0
When level detection mode is selected
[Clearing condition]
Driving pin IRQ0 high
[Setting condition]
Driving pin IRQ0 low
When edge detection mode is selected
[Clearing conditions]
⎯ Writing 0 after reading IRQ0F = 1
⎯ Accepting an IRQ0 interrupt
[Setting condition]
Detecting the specified edge of pin IRQ0
R/W
8
0
R/W
7
0
R/W
Rev. 5.00 Mar. 06, 2009 Page 101 of 770
6
0
IPR[7:4]
R/W
5
0
R/W
4
0
R/W
3
0
REJ09B0243-0500
R/W
2
0
IPR[3:0]
R/W
1
0
R/W
0
0