MC68HC05C8A Datasheet, PDF (60/158 Pages) Motorola, Inc – Microcontrollers

Timer
NOTE:
The I bit in the condition code register should be set while manipulating
both the high and low byte register of a specific timer function to ensure
that an interrupt does not occur.
HIGH
BYTE
LOW
BYTE
$16
OUTPUT
$17 ^COMPARE
REGISTER
INTERNAL BUS
INTERNAL
PROCESSOR
CLOCK
8-BIT
BUFFER
÷4
HIGH
BYTE
LOW
BYTE
16-BIT FREE
RUNNING
$18
COUNTER
$19
HIGH LOW
BYTE BYTE
INPUT
$14
CAPTURE _$15
REGISTER
COUNTER _$1A
ALTERNATE _$1B
REGISTER
OUTPUT
COMPARE
CIRCUIT
OVERFLOW
DETECT
CIRCUIT
EDGE
DETECT
CIRCUIT
TIMER _{ICF OCF TOF} $13
STATUS
REGISTER
INTERRUPT
CIRCUIT
OUTPUT
LEVEL
REGISTER
ICIE OCIE
TOIE IEDG OLVL
TIMER
CONTROL
REGISTER
$12
DQ
CLK
C
RESET
Figure 8-1. Timer Block Diagram
OUTPUT
LEVEL
(TCMP)
EDGE
INPUT
(TCAP)
Technical Data
60
MC68HC05C8A • MC68HCL05C8A • MC68HSC05C8A — Rev. 5.0
Timer
MOTOROLA