HD64F3644PV Renesas Electronics America, HD64F3644PV Datasheet - Page 90

• Manufacturer Part Number: HD64F3644PV
• Description: IC H8/3644 MCU FLASH 32K 64SDIP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644PV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-SDIP (0.750", 19.05mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 3 Exception Handling
Interrupt Request Register 1 (IRR1)
Note:
IRR1 is an 8-bit read/write register, in which a corresponding flag is set to 1 when a timer B1,
timer A, or IRQ
interrupt is accepted. It is necessary to write 0 to clear each flag. Upon reset, IRR1 is initialized to
H'10.
Bit 7 Timer B1 Interrupt Request Flag (IRRTB1)
Bit 7: IRRTB1
0
1
Bit 6 Timer A Interrupt Request Flag (IRRTA)
Bit 6: IRRTA
0
1
Bit 5 Reserved Bit: Bit 5 is reserved: it is always read as 0 and cannot be modified.
Bit 4 Reserved Bit: Bit 4 is reserved; it is always read as 1, and cannot be modified.
Rev. 6.00 Sep 12, 2006 page 68 of 526
REJ09B0326-0600
Bit
Initial value
Read/Write
* Only a write of 0 for flag clearing is possible.
3
to IRQ
IRRTB1
R/W *
Description
Clearing condition:
When IRRTB1 = 1, it is cleared by writing 0
Setting condition:
When the timer B1 counter value overflows from H'FF to H'00
Description
Clearing condition:
When IRRTA = 1, it is cleared by writing 0
Setting condition:
When the timer A counter value overflows from H'FF to H'00
7
0
0
interrupt is requested. The flags are not cleared automatically when an
IRRTA
R/W *
0
6
5
0
4
1
IRRI3
R/W *
3
0
IRRI2
R/W *
2
0
IRRI1
R/W *
1
0
(initial value)
(initial value)
IRRI0
R/W *
0
0