UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 216
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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8.6 Cautions Related to 16-Bit Timer/Event Counter 0
(1) Timer start errors
(2) 16-bit timer capture/compare register setting (clear & start mode entered on match between TM0 and
(3) Capture register data retention timing
(4) Valid edge setting
An error of up to one clock may occur in the time required for a match signal to be generated after timer start.
This is because 16-bit timer counter 0 (TM0) is started asynchronously to the count clock.
CR00)
Set 16-bit timer capture/compare registers 00, 01 (CR00, CR01) to other than 0000H. This means a 1-pulse
count operation cannot be performed.
If the valid edge of the TI00 pin is input during 16-bit timer capture/compare register 01 (CR01) read, CR01
performs a capture operation but, the read value at this time is not guaranteed. The interrupt request signal
(INTTM01) is generated upon detection of the valid edge.
Set the valid edge of the TI00 pin after clearing bits 2 and 3 (TMC02 and TMC03) of 16-bit timer mode control
register 0 (TMC0) to 0, 0, respectively, and then stopping the timer operation. The valid edge is set by bits 4
and 5 (ES00 and ES01) of prescaler mode register 0 (PRM0).
CR01 capture value
Capture read signal
TM0 count value
Count clock
Edge input
TM0 count
Count clock
INTTM01
Figure 8-28. Start Timing of 16-Bit Timer Counter 0 (TM0)
Figure 8-29. Capture Register Data Retention Timing
CHAPTER 8 16-BIT TIMER/EVENT COUNTER 0
Timer start
X
0000H
N
Capture
User’s Manual U14046EJ5V0UD
N + 1
0001H
N + 2
0002H
Read value not guaranteed
though capture operation performed
N + 1
M
0003H
M + 1
0004H
M + 1
M + 2
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