HD64F38602R Datasheet, PDF (246/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 13 Asynchronous Event Counter (AEC)
φ
PSS
ECCR
IRREC
ECCSR
φ/2
φ/4, φ/8
AEVH
Edge sensing
circuit
AEVL
Edge sensing
circuit
IRQAEC
AECPWM
Edge sensing
circuit
ECH
OVH
(8 bits) CK
OVL
ECL
(8 bits) CK
To CPU interrupt
(IRREC2)
ECPWCR
φw/16
φ/2, φ/4,
φ/8, φ/16,
φ/32, φ/64
PWM waveform
generator
ECPWDR
AEGSR
[Legend]
ECPWCR: Event counter PWM compare register
ECPWDR: Event counter PWM data register
AEGSR: Input pin edge select register
ECCSR: Event counter control/status register
ECL: Event counter L
ECCR: Event counter control register
ECH: Event counter H
PSS: Prescaler s
Figure 13.1 Block Diagram of Asynchronous Event Counter
Rev. 3.00 May 15, 2007 Page 214 of 516
REJ09B0152-0300