HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 180

• 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
Table 5-10 Number of States in Interrupt Handling Routine Execution Statuses
Symbol
Instruction fetch
Branch address read
Stack manipulation
Legend:
m: Number of wait states in an external device access.
5.5
5.5.1
When an interrupt enable bit is cleared to 0 to disable interrupts, the disabling becomes effective
after execution of the instruction.
In other words, when an interrupt enable bit is cleared to 0 by an instruction such as BCLR or
MOV, if an interrupt is generated during execution of the instruction, the interrupt concerned will
still be enabled on completion of the instruction, and so interrupt exception handling for that
interrupt will be executed on completion of the instruction. However, if there is an interrupt
request of higher priority than that interrupt, interrupt exception handling will be executed for the
higher-priority interrupt, and the lower-priority interrupt will be ignored.
The same also applies when an interrupt source flag is cleared to 0.
Figure 5-8 shows an example in which the TCIEV bit in the TPU’s TIER register is cleared to 0.
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Usage Notes
Contention between Interrupt Generation and Disabling
S
S
S
I
J
K
Internal
Memory
1
2-State
Access
4
8 Bit Bus
Object of Access
3-State
Access
6 + 2m
External Device
H8S/2639, H8S/2638, H8S/2636,
2-State
Access
2
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
16 Bit Bus
3-State
Access
3 + m
May 28, 2010