UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 246
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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Remark f
Caution If the watch timer and 5-bit counter are enabled by the watch timer mode control register (WTM)
Count clock
Watch timer
interrupt INTWT
Interval timer
interrupt INTWTI
(by setting bits 0 (WTM0) and 1 (WTM1) of WTM to 1), the time from this setting to the occurrence
of the first interrupt request (INTWT) is not exactly the watch timer interrupt time (0.25 or 0.5
seconds). This is because the 5-bit counter is late by one output cycle of the 9-bit prescaler in
starting counting. The second INTWT signal and those that follow are generated exactly at the
set time.
n: The number of interval timer operations
Figures in parentheses are for operation with f
W
: Watch timer clock frequency (f
5-bit counter
Figure 10-3. Operation Timing of Watch Timer/Interval Timer
Start
0H
Interval time
Interrupt time of watch timer
(T)
CHAPTER 10 WATCH TIMER
User’s Manual U14046EJ5V0UD
X
/2
(0.5 s)
n x T
7
or f
XT
)
W
= 32.768 kHz.
Overflow
Interrupt time of watch timer
T
(0.5 s)
n x T
Overflow
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