DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 118

• 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: -

6.3.3
IRQSR is a 16-bit register that indicates the states of the external interrupt input pins IRQ0 to
IRQ3 and the status of interrupt request.
Initial value:
Rev. 5.00 Mar. 06, 2009 Page 98 of 770
REJ09B0243-0500
Bit
15 to 12
11
10
9
8
7to 4
Note:
R/W:
Bit:
*
The initial value is 1 when the level on the corresponding IRQ pin is high, and 0 when the level on the pin is low.
IRQ Status register (IRQSR)
15
R
1
-
Bit Name
⎯
IRQ3L
IRQ2L
IRQ1L
IRQ0L
⎯
14
R
1
-
13
R
1
-
Initial
Value
All 1
*
*
*
*
All 0
12
R
1
-
IRQ3L IRQ2L IRQ1L IRQ0L
11
R
*
R/W
R
R
R
R
R
⎯
10
R
*
Description
Reserved
These bits are always read as 1.
Indicates the state of pin IRQ3.
0: State of pin IRQ3 is low
1: State of pin IRQ3 is high
Indicates the state of pin IRQ2.
0: State of pin IRQ2 is low
1: State of pin IRQ2 is high
Indicates the state of pin IRQ1.
0: State of pin IRQ1 is low
1: State of pin IRQ1 is high
Indicates the state of pin IRQ0.
0: State of pin IRQ0 is low
1: State of pin IRQ0 is high
Reserved
These bits are always read as 0. The write value
should always be 0.
R
9
*
R
8
*
R/W
7
0
-
R/W
6
0
-
R/W
5
0
-
R/W
4
0
-
IRQ3F IRQ2F IRQ1F IRQ0F
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
0