UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 509
UPD78F0537DGA(T)-9EV-A
Manufacturer Part Number
UPD78F0537DGA(T)-9EV-A
Description
8BIT MCU, 128K FLASH, 7KB RAM, SMD
Manufacturer
NEC
Datasheet
1.UPD78F0535GBT-UEU-A.pdf
(773 pages)
Specifications of UPD78F0537DGA(T)-9EV-A
Controller Family/series
UPD78
No. Of I/o's
55
Ram Memory Size
7KB
Cpu Speed
20MHz
No. Of Timers
8
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
128KB
Oscillator Type
External, Internal
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Interrupt request held pending
Interrupt request held pending
××IF:
××MK: Interrupt mask flag
××PR: Priority specification flag
IE:
ISP:
Interrupt request flag
Flag that controls acknowledgement of maskable interrupt request (1 = Enable, 0 = Disable)
Flag that indicates the priority level of the interrupt currently being serviced (0 = high-priority interrupt
servicing, 1 = No interrupt request acknowledged, or low-priority interrupt servicing)
Interrupt request held pending
Figure 19-7. Interrupt Request Acknowledgement Processing Algorithm
Yes
No
Vectored interrupt servicing
interrupt request among those
simultaneously generated
Any high-priority
with ××PR = 0?
IE = 1?
CHAPTER 19 INTERRUPT FUNCTIONS
No
Yes
User’s Manual U17260EJ6V0UD
Yes (High priority)
No
No
those simultaneously generated
Vectored interrupt servicing
interrupt request among
interrupt request among
those simultaneously
Any high-priority
Any high-priority
with ××PR = 0?
××MK = 0?
××PR = 0?
generated?
××IF = 1?
ISP = 1?
IE = 1?
Start
Yes (interrupt request generation)
Yes
No (Low priority)
No
No
Yes
Yes
No
No
Interrupt request held pending
Interrupt request held pending
Interrupt request held pending
Interrupt request held pending
Yes
Yes
509
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