UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 112

• 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: -

110
CR010 capture value
CR000 capture value
(4) Pulse width measurement by means of restart
TM00 count value
TI000 pin input
Note The carry flag is set to 1. Ignore this setting.
Specify both the rising and falling edges as the valid edges of the TI000 pin, by using bits 4 and 5 (ES000 and
ES010) of PRM00.
When a valid edge of the TI000 pin is detected, the count value of 16-bit timer/counter 00 (TM00) is taken into
16-bit timer capture/compare register 010 (CR010), and then the pulse width of the signal input to the TI000
pin is measured by clearing TM00 and restarting the count.
Sampling is performed at the interval selected by prescaler mode register 00 (PRM00) and a capture operation
is only performed when a valid level of the TI000 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.
Count clock
INTTM010
Figure 6-24. Timing of Pulse Width Measurement Operation by Free-Running Counter
0000H
t
and Two Capture Registers (with Rising Edge Specified)
0001H
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
D0
(D1
D0
User’s Manual U17446EJ5V0UD
D0 + 1
D0)
t
D1
D1
D1 + 1
(D2
FFFFH
D1)
0000H
t
Note
D2
(D3
D2 + 1
D2
D2)
t
D3
D3