August 27, 1998
GENERAL RELEASE SPECIFICATION
SECTION 10
16-BIT TIMER
The MC68HC05SB7 MCU contains a 16-bit programmable Timer with an Input
Capture function and an Output Compare function. Figure 10-1 shows a block
diagram of the 16-bit programmable timer.
PB1
TCAP
EDGE
SELECT
& DETECT
LOGIC
INPUT
SELECT
MUX
ICRH ($0014) ICRL ($0015)
TMRH ($0018) TMRL ($0019)
ACRH ($001A) ACRL ($001B)
SCL
OF
SMBUS
CPF
FLAG
BIT
(from
analog
subsystem)
INTERNAL
16-BIT COUNTER
16-BIT COMPARATOR
÷ 4
CLOCK
ICEN
(bit 4 of $1D)
(f
÷ 2)
OSC
TCSEL
(bit 2 of $0B)
TCMP
D Q
C
OCRH ($0016) OCRL ($0017)
TIMER
INTERRUPT
REQUEST
RESET
TIMER CONTROL REGISTER
$0012
TIMER STATUS REGISTER
$0013
INTERNAL DATA BUS
Figure 10-1. Programmable Timer Block Diagram
MC68HC05SB7
REV 2.1
16-BIT TIMER
MOTOROLA
10-1
FREESCALE [ Freescale ]
