HD64F3437STF16V Renesas Electronics America, HD64F3437STF16V Datasheet - Page 113
HD64F3437STF16V
Manufacturer Part Number
HD64F3437STF16V
Description
MCU 3/5V 60K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300r
Datasheet
1.HD64F3437STF16V.pdf
(755 pages)
Specifications of HD64F3437STF16V
Core Processor
H8/300
Core Size
8-Bit
Speed
16MHz
Connectivity
Host Interface, I²C, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
74
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Company:
Part Number:
HD64F3437STF16V
Manufacturer:
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Quantity:
10 000
Part Number:
HD64F3437STF16V
Manufacturer:
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4.3.7
Note that the following type of contention can occur in interrupt handling.
When software clears the enable bit of an interrupt to 0 to disable the interrupt, the interrupt
becomes disabled after execution of the clearing instruction. If an enable bit is cleared by a BCLR
or MOV instruction, for example, and the interrupt is requested during execution of that
instruction, at the instant when the instruction ends the interrupt is still enabled, so after execution
of the instruction, the hardware exception-handling sequence is executed for the interrupt. If a
higher-priority interrupt is requested at the same time, however, the hardware exception-handling
sequence is executed for the higher-priority interrupt and the interrupt that was disabled is ignored.
Similar considerations apply when an interrupt request flag is cleared to 0.
Figure 4.8 shows an example in which the OCIAE bit is cleared to 0.
The above contention does not occur if the enable bit or flag is cleared to 0 while the interrupt
mask bit (I) is set to 1.
ø
Internal address bus
Internal write signal
OCIAE
OCFA
OCIA interrupt signal
Precaution
Figure 4.8 Contention between Interrupt and Disabling Instruction
cycle to TIER
TIER address
CPU write
OCIA interrupt handling
81
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