UPD78F0138HGK-9ET-A Renesas Electronics America, UPD78F0138HGK-9ET-A Datasheet - Page 234
UPD78F0138HGK-9ET-A
Manufacturer Part Number
UPD78F0138HGK-9ET-A
Description
MCU 8BIT 60K FLASH 64TQFP
Manufacturer
Renesas Electronics America
Series
78K0/Kx1+r
Datasheet
1.UPD78F0138HGK-9ET-A.pdf
(568 pages)
Specifications of UPD78F0138HGK-9ET-A
Core Processor
78K/0
Core Size
8-Bit
Speed
16MHz
Connectivity
3-Wire SIO, LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
42
Program Memory Size
60KB (60K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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10.1 Functions of Watchdog Timer
signal is generated.
For details of RESF, refer to CHAPTER 20 RESET FUNCTION.
internal oscillator as shown in Table 10-2.
232
The watchdog timer is used to detect an inadvertent program loop. If a program loop is detected, an internal reset
When a reset occurs due to the watchdog timer, bit 4 (WDTRF) of the reset control flag register (RESF) is set to 1.
The operation mode of the watchdog timer (WDT) is switched according to the option byte setting of the on-chip
Remarks 1. f
2
2
2
2
2
2
2
2
11
12
13
14
15
16
17
18
During Internal Oscillation Clock Operation
/f
/f
/f
/f
/f
/f
/f
/f
R
R
R
R
R
R
R
R
(4.27 ms)
(8.53 ms)
(17.07 ms)
(34.13 ms)
(68.27 ms)
(136.53 ms)
(273.07 ms)
(546.13 ms)
2. f
3. Figures in parentheses apply to operation at f
Table 10-1. Loop Detection Time of Watchdog Timer
R
XP
: Internal oscillation clock oscillation frequency
: High-speed system clock oscillation frequency
CHAPTER 10 WATCHDOG TIMER
User’s Manual U16899EJ3V0UD
Loop Detection Time
2
2
2
2
2
2
2
2
During High-Speed System Clock Operation
13
14
15
16
17
18
19
20
/f
/f
/f
/f
/f
/f
/f
/f
XP
XP
XP
XP
XP
XP
XP
XP
(819.2 s)
(1.64 ms)
(3.28 ms)
(6.55 ms)
(13.11 ms)
(26.21 ms)
(52.43 ms)
(104.86 ms)
R
= 480 kHz (MAX.), f
XP
= 10 MHz
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