HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 160

• Manufacturer Part Number: HD64F2638F20J
• Description: IC H8S MCU FLASH 256K 128-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2638F20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 5 Interrupt Controller
As shown in table 5-3, multiple interrupts are assigned to one IPR. Setting a value in the range
from H'0 to H'7 in the 3-bit groups of bits 6 to 4 and 2 to 0 sets the priority of the corresponding
interrupt. The lowest priority level, level 0, is assigned by setting H'0, and the highest priority
level, level 7, by setting H'7.
When interrupt requests are generated, the highest-priority interrupt according to the priority
levels set in the IPR registers is selected. This interrupt level is then compared with the interrupt
mask level set by the interrupt mask bits (I2 to I0) in the extend register (EXR) in the CPU, and if
the priority level of the interrupt is higher than the set mask level, an interrupt request is issued to
the CPU.
5.2.3
IER is an 8-bit readable/writable register that controls enabling and disabling of interrupt requests
IRQ5 to IRQ0.
IER is initialized to H'00 by a reset and in hardware standby mode.
Bits 7 and 6—Reserved: These bits are always read as 0, and should only be written with 0.
Bits 5 to 0—IRQ5 to IRQ0 Enable (IRQ5E to IRQ0E): These bits select whether IRQ5 to
IRQ0 are enabled or disabled.
Bit n
IRQnE
0
1
Page 110 of 1458
Bit
Initial value
R/W
IRQ Enable Register (IER)
Description
IRQn interrupts disabled
IRQn interrupts enabled
:
:
:
R/W
⎯
7
0
R/W
⎯
6
0
IRQ5E
R/W
5
0
IRQ4E
R/W
4
0
IRQ3E
R/W
3
0
IRQ2E
R/W
2
0
H8S/2639, H8S/2638, H8S/2636,
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
IRQ1E
R/W
1
0
(Initial value)
(n = 5 to 0)
IRQ0E
May 28, 2010
R/W
0
0