UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 416

• Manufacturer Part Number: UPD78F0034BGC-8BS-A
• Description: MCU 8-Bit 78K0 CISC 32KB Flash 2.5V/3.3V/5V 64-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0034BGC-8BS-A

• Package: 64LQFP
• Family Name: 78K0
• Maximum Speed: 12 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 51
• Interface Type: 3-Wire/UART
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

414
Interrupt request held pending
Interrupt request held pending
IE:
ISP:
IF:
MK: Interrupt mask flag
PR: Priority specification flag
Interrupt request flag
Flag that controls acknowledge 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 19-10. Interrupt Request Acknowledge Processing Algorithm
Yes
No
Vectored interrupt servicing
interrupt request among those
simultaneously generated
Any high-priority
with
CHAPTER 19 INTERRUPT FUNCTIONS
IE = 1?
PR = 0?
No
Yes
User’s Manual U14046EJ5V0UD
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
generated?
ISP = 1?
IE = 1?
MK = 0?
PR = 0?
Start
IF = 1?
PR = 0?
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