UPD78F0513AMC-GAA-AX Renesas Electronics America, UPD78F0513AMC-GAA-AX Datasheet - Page 332

• Manufacturer Part Number: UPD78F0513AMC-GAA-AX
• Description: MCU 8BIT 38PIN SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2r

Specifications of UPD78F0513AMC-GAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2
(2) Measuring the pulse width by using one input signal of the TI00n pin (free-running timer mode)
R01UH0008EJ0401 Rev.4.01
Jul 15, 2010
Set the free-running timer mode (TMC0n3 and TMC0n2 = 01). The count value of TM0n is captured to CR00n in the
phase reverse to the valid edge detected on the TI00n pin. When the valid edge of the TI00n pin is detected, the
count value of TM0n is captured to CR01n.
By this measurement method, values are stored in separate capture registers when a width from one edge to another
is measured. Therefore, the capture values do not have to be saved. By subtracting the value of one capture register
from that of another, a high-level width, low-level width, and cycle are calculated.
If an overflow occurs, the value becomes negative if one captured value is simply subtracted from another and,
therefore, a borrow occurs (bit 0 (CY) of the program status word (PSW) is set to 1). If this happens, ignore CY and
take the calculated value as the pulse width. In addition, clear bit 0 (OVF0n) of 16-bit timer mode control register 0n
(TMC0n) to 0.
Remark n = 0:
Capture trigger input
Capture trigger input
(TMC0n3, TMC0n2)
Capture interrupt
Capture interrupt
Capture register
Capture register
TM0n register
Operable bits
Overflow flag
(INTTM01n)
(INTTM00n)
n = 0, 1: 78K0/KE2 products whose flash memory is at least 48 KB, and 78K0/KF2 products
(CR00n)
(CR01n)
(OVF0n)
(TI00n)
(TI01n)
FFFFH
0000H
78K0/KE2 products whose flash memory is less than 32 KB, and 78K0/KB2, 78K0/KC2,
78K0/KD2 products
0000H
L
L
Figure 7-54. Timing Example of Pulse Width Measurement (2)
00
0000H
A
• TMC0n = 04H, PRM0n = 10H, CRC0n = 07H
01
M
A
CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 AND 01
B
M
0 write clear
N
B
N
C
0 write clear
S
C
D
S
0 write clear
P
D
P
E
0 write clear
Q
E
Q
332