M30620FCAFP datasheet(362/615 Pages) RENESAS

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Timer B

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-45

Figure 2.3.7. Set-up procedure of event counter mode

Setting counter value

Can be set to 000016 to FFFF16 (n)

(b15)

(b8)

Start count

Setting count start flag

Count start flag

[Address 038016]

TABSR

Timer B0 count start flag

Timer B1 count start flag

Timer B2 count start flag

Selecting event counter mode and functions

Selection of event counter mode

Invalid in event counter mode

Event clock select

0 : Input from TBiIN pin (Note)

Count polarity select bit

0 0 : Counts external signal falling edges

b3 b2

Note: Set the corresponding port direction register to “0”.

Timer B0 register [Address 039116, 039016]TB0

Timer B1 register [Address 039316, 039216]TB1

Timer B2 register [Address 039516, 039416]TB2

Timer B3 register [Address 035116, 035016]TB3

Timer B4 register [Address 035316, 035216]TB4

Timer B5 register [Address 035516, 035416]TB5

Timer Bi mode register (i=0 to 5) [Address 039B16 to 039D16, 035B16 to 035D16]

TBiMR (i=0 to 5)

Fixed to “0” in event counter mode ( i = 0, 3)

In an attempt to write to this bit, write “0” (i = 1, 2, 4, 5)

Timer B3,4,5 count start

flag

[Address 034016]

TBSR

Timer B3 count start flag

Timer B4 count start flag

Timer B5 count start flag

M30620FCAFP Datasheet(PDF) 362 Page - Renesas Technology Corp

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