UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 237

• 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

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

9.4.5 Interval timer (16-bit) operations
mode is entered.
of the count value preset to the 8-bit timer compare registers (CR50, CR51).
When bit 4 (TMC514) of 8-bit timer mode control register 51 (TMC51) is set to 1, the 16-bit resolution timer/counter
The 8-bit timer/event counter operates as an interval timer that generates interrupt requests repeatedly at intervals
[Setting]
<1> Set each register
<2> When TMC51 is set to TCE51 = 1 and then TMC50 is set to TCE50 = 1, the count operation starts.
<3> When the values of TM50 and CR50 of the cascade-connected timer match, INTTM50 of TM50 is generated
<4> INTTM50 is generated repeatedly at the same interval.
Cautions 1. Stop the timer operation without fail before setting the compare registers (CR50, CR51).
Figure 9-13 shows an example of 16-bit resolution cascade connection mode timing.
Count clock
INTTM50
TCE50
TCE51
TM50
TM51
CR50
CR51
TO50
TCL50:
CR50, CR51:
TMC50, TMC51: Select the clear & start mode entered on a match between TM50 and CR50 (TM51 and
(TM50 and TM51 are cleared to 00H).
2. INTTM51 of TM51 is generated when the TM51 count value matches CR51, even if cascade
3. Set TCE50 and TCE51 in order of TM51 then TM50.
4. Count restart/stop can only be controlled by setting TCE50 of TM50 to 1/0.
connection is used. Be sure to mask TM51 to disable interrupts.
00H
00H
Operation enable
Count start
01H
Figure 9-13. 16-Bit Resolution Cascade Connection Mode
Select count clock for TM50.
Cascade-connected TM51 need not be selected.
Compare value (each value can be set to 00H to FFH)
CR51).
CHAPTER 9 8-BIT TIMER/EVENT COUNTERS 50, 51
N
M
TM50
TM51
N N + 1
TMC50 = 0000
TMC51 = 0001
User’s Manual U14046EJ5V0UD
FFH 00H
01H
Interval time
FFH 00H
0B
0B
02H
: don’t care
: don’t care
M 1 M
FFH 00H 01H
Interrupt request
generation
Level reverse
Counter clear
N 00H 01H
00H
Operation
stop
A 00H
B 00H
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