UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 413

• 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

CPU processing
WDTIF
Figure 19-7. Non-Maskable Interrupt Request Generation to Acknowledge Flowchart
WDTIF: Watchdog timer interrupt request flag
Figure 19-8. Non-Maskable Interrupt Request Acknowledge Timing
Instruction
WDTM: Watchdog timer mode register
WDT:
Interrupt request generated during this interval is acknowledged at
Watchdog timer
Interrupt request generation
Start of interrupt servicing
CHAPTER 19 INTERRUPT FUNCTIONS
control register not
Overflow in WDT?
(with watchdog timer
(with non-maskable
interrupt selected)?
WDT interrupt
mode selected)?
accessed?
servicing?
WDTM4 = 1
WDTM3 = 0
Interrupt
Start
User’s Manual U14046EJ5V0UD
Yes
Yes
Yes
Yes
Yes
Instruction
No
No
No
No
No
Reset processing
Interrupt request held pending
Interval timer
PSW and PC save, jump
to interrupt servicing
.
Interrupt service
program
411