UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 109

• Manufacturer Part Number: UPD78F9234MC-5A4-A
• Description: MCU 8BIT 8KB FLASH 30PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9234MC-5A4-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Figure 6-21. Control Register Settings for Measurement of Two Pulse Widths with Free-Running Counter
(2) Measurement of two pulse widths with free-running counter
Remark 0/1: Setting 0 or 1 allows another function to be used simultaneously with pulse width measurement.
PRM00
CRC00
TMC00
When 16-bit timer counter 00 (TM00) is operated in free-running mode, it is possible to simultaneously
measure the pulse widths of the two signals input to the TI000 pin and the TI010 pin.
Specify both the rising and falling edges as the valid edges of the TI000 and TI010 pins, by using bits 4 and 5
(ES000 and ES010) and bits 6 and 7 (ES100 and ES110) of PRM00.
When the valid edge specified by bits 4 and 5 (ES000 and ES010) of PRM00 is input to the TI000 pin, the
value of TM00 is taken into 16-bit timer capture/compare register 000 (CR010) and an interrupt request signal
(INTTM010) is set.
Also, when the valid edge specified by bits 6 and 7 (ES100 and ES110) of PRM00 is input to the TI010 pin, the
value of TM00 is taken into 16-bit timer capture/compare register 000 (CR000) and an interrupt request signal
(INTTM000) is set.
Sampling is performed using the count clock cycle selected by prescaler mode register 00 (PRM00), and a
capture operation is only performed when a valid level of the TI000 or TI010 pin is detected twice, thus
eliminating noise with a short pulse width.
Caution The measurable pulse width in this operation example is up to 1 cycle of the timer counter.
ES110
7
0
1
7
0
See the description of the respective control registers for details.
ES100
6
0
1
6
0
ES010
5
0
1
5
0
ES000
(c) 16-bit timer mode control register 00 (TMC00)
(a) Capture/compare control register 00 (CRC00)
4
0
1
4
0
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
(b) Prescaler mode register 00 (PRM00)
TMC003
3
0
3
0
0
CRC002
TMC002
User’s Manual U17446EJ5V0UD
1
2
0
1
CRC001
TMC001
PRM001
0/1
0/1
0
CRC000
PRM000
OVF00
0/1
1
0
CR000 used as capture register
Captures valid edge of TI010 pin to CR000.
CR010 used as capture register
Selects count clock (setting “11” is prohibited).
Specifies both edges for pulse width detection.
Specifies both edges for pulse width detection.
Free-running mode
107