UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 199

• 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

8.4.3 Pulse width measurement operations
16-bit timer counter 0 (TM0).
the timer in synchronization with the edge of the signal input to the TI00 pin.
(1) Pulse width measurement with free-running counter and one capture register
It is possible to measure the pulse width of the signals input to the TI00 pin and TI01 pin using
There are two measurement methods: measuring with TM0 used in free-running mode, and measuring by restarting
When 16-bit timer counter 0 (TM0) is operated in free-running mode (see register settings in Figure 8-14), and
the edge specified by prescaler mode register 0 (PRM0) is input to the TI00 pin, the value of TM0 is taken into
16-bit timer capture/compare register 01 (CR01) and an external interrupt request signal (INTTM01) is set.
Any of three edges can be selected—rising, falling, or both edges—specified by bits 4 and 5 (ES00 and ES01)
of PRM0.
Sampling is performed with the count clock selected by PRM0, and a capture operation is only performed when
a valid level of the TI00 pin is detected twice, thus eliminating noise with a short pulse width.
Figure 8-14. Control Register Settings for Pulse Width Measurement with Free-Running Counter
TMC0
CRC0
and One Capture Register
0
0
(a) 16-bit timer mode control register 0 (TMC0)
(b) Capture/compare control register 0 (CRC0)
CHAPTER 8 16-BIT TIMER/EVENT COUNTER 0
0
0
0
0
User’s Manual U14046EJ5V0UD
0
0
TMC03
0
0
CRC02
TMC02
1
1
CRC01
0/1
0
CRC00
OVF0
0
0
CR00 used as compare register
CR01 used as capture register
Free-running mode
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