mc68hc912d60c Freescale Semiconductor, Inc, mc68hc912d60c Datasheet - Page 163

• Manufacturer Part Number: mc68hc912d60c
• Description: Hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC912D60A — Rev. 3.1
Freescale Semiconductor
EXTAL
XTAL
CONSUMPTION
OSCILLATOR
SLOW MODE
REDUCED
DIVIDER
PHASE
CLOCK
LOCK
LOOP
EXTALi
EXTALi
SLWCLK
PLLCLK
EXTALi
Bus clock select bits BCSP and BCSS in the clock select register
(CLKSEL) determine which clock drives SYSCLK for the main system
including the CPU and buses. BCSS has no effect if BCSP is set. During
BCSP BCSS
Figure 11-6. Clock Generation Chain
BCSP BCSS
BCSP BCSS
1:x
0:0
0:1
÷
÷
2
2
Clock Functions
SYSCLK
CLKSRC = 1
CLKSRC = 0
÷2
SYNC
SYNC
GENERATOR
GENERATOR
T CLOCK
E AND P
CLOCK
CLKSW = 0
CLKSW = 1
MCS = 0
MCS = 1
BDMCLK
Clock Divider Chains
TCLKs
PCLK
ECLK
XCLK
MCLK
Clock Functions
Technical Data
SCI0, SCI1,
TO CLOCK
ATD0, ATD1
MONITOR
RTI, COP
TO BDM
MSCAN
TO CAL
TO CPU
BUSES,
PWM,
ECT
TO
TO
TO
SPI,
TO
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