UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 247
UPD78F0034BGC-8BS-A
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
Datasheet
1.UPD78F0034BGK-9ET-A.pdf
(605 pages)
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
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Part Number:
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11.1 Watchdog Timer Functions
(1) Watchdog timer
(2) Interval timer
The watchdog timer has the following functions.
Caution
Figure 11-1 shows a block diagram of the watchdog timer.
The watchdog timer detects a program loop. Upon detection of a program loop, a non-maskable interrupt request
or RESET can be generated.
For the loop detection time, see Table 11-2.
Interrupt requests are generated at the preset time intervals.
For the interval time, see Table 11-3.
Select the watchdog timer mode or the interval timer mode using the watchdog timer mode
f
register (WDTM). (The watchdog timer and the interval timer cannot be used simultaneously.)
X
/2
f
X
8
Watchdog timer clock
select register (WDCS)
Clock
input
controller
RUN
Figure 11-1. Watchdog Timer Block Diagram
CHAPTER 11 WATCHDOG TIMER
WDCS2 WDCS1 WDCS0
Division mode
selector
Divider
circuit
User’s Manual U14046EJ5V0UD
Internal bus
Watchdog timer mode
register (WDTM)
Divided
clock
selector
3
RUN WDTM4 WDTM3
Output
controller
INTWDT
RESET
WDT mode signal
245
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