MC68HC711KS2MFN4 Freescale Semiconductor, MC68HC711KS2MFN4 Datasheet - Page 183

• Manufacturer Part Number: MC68HC711KS2MFN4
• Description: 32K EPROM - SLOW MODE
• Manufacturer: Freescale Semiconductor

9.3 Timer Structure
M68HC11K Family
MOTOROLA
EXTAL
4
OSCILLATOR
( 2, 4, 8, 16, 32, 64, 128)
PRESCALER
( 1, 4, 8, 16)
PR[1:0]
PRESCALER
IC/OC
TCNT
SPR[2:0]
As
and the internal PH2 bus clock, are derived from the oscillator output
divided by four.
Figure 9-1. Timer Clock Divider Chains
Figure 9-1
TOF
CLEAR COP
TIMER
4
shows, the primary system clocks, including the E clock
( 1, 2, 3, 4, 5......8191)
POSTSCALER
POSTSCALER
( 1, 4, 16, 64)
PRESCALER
Timing System
CR[1:0]
SBR[12:0]
XDV[1:0].
4
1, 4, 6, 8
S
R
Q
Q
SYSTEM
E 2
E 2
RESET
13
15
E 2
PRESCALER
2
(÷ 1, 2, 4, 8)
RTR[1:0]
6
16
R
S
Q
Q
XOUT
E CLOCK
SCI RECEIVER CLOCK
SCI TRANSMIT CLOCK
PH 2 (INTERNAL BUS
SPI
PULSE ACCUMULATOR
REAL-TIME INTERRUPT
CLOCK)
FORCE
RESET
Timer Structure
COP
Timing System
Technical Data
183