XC68HC12A0CPV8 Freescale Semiconductor, XC68HC12A0CPV8 Datasheet - Page 160
XC68HC12A0CPV8
Manufacturer Part Number
XC68HC12A0CPV8
Description
IC, 16BIT MCU, 68HC12, 8MHZ, TQFP-112
Manufacturer
Freescale Semiconductor
Datasheet
1.MC912D60ACFUE8.pdf
(460 pages)
Specifications of XC68HC12A0CPV8
Controller Family/series
68HC12
No. Of I/o's
68
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
8MHz
No. Of Timers
1
Core Size
16 Bit
Program Memory Size
60KB
Peripherals
ADC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Clock Functions
CLKSEL — Clock Generator Clock select Register
Technical Data
160
RESET:
Bit 7
0
0
BCSP
6
0
Read and write anytime. Exceptions are listed below for each bit.
BCSP — Bus Clock Select PLL
BCSS — Bus Clock Select Slow
MCS — Module Clock Select
BCSP and BCSS bits determine the clock used by the main system
including the CPU and buses.
Cannot be set when PLLON = 0. In limp-home mode, the output of
BCSP is forced to 1, but the BCSP bit reads the latched value.
This bit has no effect when BCSP is set.
This bit determines the clock used by the ECT module and the baud
rate generators of the SCIs. In limp-home mode, the output of MCS is
forced to 0, but the MCS bit reads the latched value.
0 = SYSCLK is derived from the crystal clock or from SLWCLK.
1 = SYSCLK source is the PLL.
0 = SYSCLK is derived from the crystal clock EXTALi.
1 = SYSCLK source is the Slow clock SLWCLK.
0 = M clock is the same as PCLK.
1 = M clock is derived from Slow clock SLWCLK.
BCSS
5
0
Clock Functions
4
0
0
3
0
0
MCS
2
0
MC68HC912D60A — Rev. 3.1
1
0
0
Freescale Semiconductor
Bit 0
0
0
$003D
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