M16CSLASH29 datasheet(182/499 Pages) RENESAS

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13. Timer S

page 158

Table 13.6 Register Settings Associated with the Time Measurement Function

Bit

Function

G1TMCRj

CTS1 to CTS0

Select time measurement trigger

DF1 to DF0

Select the digital filter function

GT, GOC, GSC

Select the gate function

Select the prescaler function

G1TPRk

Setting value of prescaler

G1FS

FSCj

Set to 1 (time measurement function)

G1FE

IFEj

Set to 1 (channel j function enabled)

j = 0 to 7 k = 6, 7

Bit configurations and function varys with channels used.

Registers associated with the time measurement function must be set after setting registers associated with the base timer.

Figure 13.19 Time Measurement Function (1)

FFFF16

Base timer

INPC1j pin input

000016

G1TMj register

G1IRj bit

When setting to 0, write 0 by program

j = 0 to 7

G1IRj bit: Bits in the G1IR register

Set the base timer to 000016 (setting the RST1 bit to 1, and bits RST4 and RST2 to 0),

when the base timer value matches the G1PO0 register setting. The base timer is set to 000016

after it reaches the G1PO0 register value + 2.

The above applies to the following condition.

Bits CTS1 to CTS0 in the G1TMCRj registers are set to 012 (rising edge). The PR bit is

set to 0 (no prescaler used) and the GT bit is set to 0 (no gate function used).

Bits RTS4, RTS2, and RTS1 in registers G1BCR0 and G1BCR1 are set to 0 (no base

timer reset). Bits UD1 to UD0 bits are set to 002 (counter increment mode).

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