MC68HC812A4 Datasheet, PDF (177/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

12.3 Block Diagram
Standard Timer Module
Block Diagram
PR[2:1:0]
MODULE
CLOCK
PRESCALER
PACLK
PACLK/256
PACLK/65536
CLK[1:0]
MUX
CHANNEL 7 OUTPUT COMPARE
TCRE
TIMCNTH:TIMCNTL
16-BIT COUNTER
CLEAR COUNTER
TE
CxI
CxF
TOF
INTERRUPT
TOI
LOGIC
INTERRUPT
REQUEST
CHANNEL 0
16-BIT COMPARATOR
TIMC0H:TIMC0L
16-BIT LATCH
CHANNEL 1
16-BIT COMPARATOR
TIMC1H:TIMC1L
16-BIT LATCH
C0F
EDGE
DETECT
IOS0
EDG0A
OM0
EDG0B
OL0
C1F
EDGE
DETECT
IOS1
EDG1A
OM1
EDG1B
OL1
CH. 0 CAPTURE
PT0
LOGIC
CH. 0 COMPARE
PAD
CH. 1 CAPTURE
PT1
LOGIC
CH. 1 COMPARE
PAD
CHANNELS 2–6
CHANNEL 7
16-BIT COMPARATOR
TIMC7H:TIMC7L
16-BIT LATCH
C7F
EDGE
DETECT
IOS7
EDG7A
OM7
EDG7B
OL7
CH. 7 CAPTURE
PT7
PA INPUT
LOGIC
CH. 7 COMPARE
PAD
PAOVF
TIMPACNTH:TIMPACNTL
PEDGE
PAE
EDGE
DETECT
PACLK/65536
PACLK/256
INTERRUPT
REQUEST
16-BIT COUNTER
INTERRUPT
LOGIC
PAOVI
PAOVF
PACLK
PAI
PAIF
PAMOD
DIVIDE-BY-64
PAIF
MODULE CLOCK
Figure 12-1. Timer Block Diagram
Advance Information
MOTOROLA
Standard Timer Module
MC68HC812A4 — Rev. 3.0
177