MC68HC05L28 Datasheet, PDF (58/156 Pages) Motorola, Inc – Flexible general-purpose microcomputer

Internal bus
High Low
byte byte
Output
compare
register 1
$22
$23
Internal
processor
clock
8-bit
buffer
High Low
byte byte
High Low
byte byte
Output
compare
register 2
$26
$27
÷4
16-bit
free-running
counter
$28
$29
Counter
alternate
register
$2A
$2B
8
High Low
byte byte
High Low
byte byte
Input capture $20 Input capture $24
register 1 $21
register 2 $25
6
Internal timer bus
Output
compare
circuit 1
Output
compare
circuit 2
Overflow
detect
circuit
Edge
detect
circuit 1
Edge
detect
circuit 2
TCAP2
pin
TCAP1
pin
DQ
CLK
C
TCMP2
pin
IC1F IC2F OC1F TOF OCF2 TSR ($2E)
DQ
CLK
C
TCMP1
pin
IC1IE IC2IE OC1IE TOIE IEDG1 IEDG2 OLVL1
RESET
TCR1 ($2C)
Interrupt circuit
Interrupt routine
OC2IE OLVL2 TCR2 ($2D)
MOTOROLA
6-2
Figure 6-1 16-bit programmable timer block diagram
16-BIT PROGRAMMABLE TIMER
TPG
MC68HC05L28