UPD78F0138HGK-9ET-A Renesas Electronics America, UPD78F0138HGK-9ET-A Datasheet - Page 231
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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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9.4 Watch Timer Operations
9.4.1 Watch timer operation
clock or subsystem clock.
operation starts. When these bits are set to 0, the 5-bit counter is cleared and the count operation stops.
setting WTM1 to 0. In this case, however, the 11-bit prescaler is not cleared. Therefore, an error up to 2
seconds occurs in the first overflow (INTWT) after zero-second start.
Remark
The watch timer generates an interrupt request (INTWT) at a specific time interval by using the high-speed system
When bit 0 (WTM0) and bit 1 (WTM1) of the watch timer operation mode register (WTM) are set to 1, the count
When the interval timer is simultaneously operated, zero-second start can be achieved only for the watch timer by
The interrupt request is generated at the following time intervals.
WTM3
0
0
1
1
f
f
f
X
XT
W
: High-speed system clock oscillation frequency
: Watch timer clock frequency
: Subsystem clock oscillation frequency
WTM2
0
1
0
1
2
2
2
2
Interrupt Time Selection
14
13
5
4
/f
/f
/f
/f
W
W
W
W
Table 9-4. Watch Timer Interrupt Time
CHAPTER 9 WATCH TIMER
User’s Manual U16899EJ3V0UD
0.5 s
0.25 s
977 s
488 s
When Operated at f
(WTM7 = 1)
XT
= 32.768 kHz
0.210 s
0.105 s
410 s
205 s
When Operated at f
(WTM7 = 0)
X
= 10 MHz
9
229
1/f
W
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