NEC uPD78056Y User Manual

Page 198

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198

CHAPTER 8 16-BIT TIMER/EVENT COUNTER

Selector

f

XX

/2

2

f

XX

/2

f

XX

2f

XX

INTTM3

16-Bit Timer Register (TM0)

16-Bit Capture/Compare

Register 01 (CR01)

OVF0

INTP0

Internal Bus

TI00/P00/INTP00

Count Clock

TM0 Count Value

TI00 Pin Input

CR01 Captured Value

INTP0

OVF0

0000

0001

D0

D1

FFFF 0000

D2

D3

D0

D1

D2

D3

(D1 – D0)

×

t

(10000H – D1 + D2)

×

t

(D3 – D2)

×

t

t

Figure 8-18. Configuration Diagram for Pulse Width Measurement by Free-Running Counter

Figure 8-19. Timing of Pulse Width Measurement Operation by Free-Running Counter

and One Capture Register (with Both Edges Specified)

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