参数资料
型号: MC68HC908RK2DW
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDSO20
封装: PLASTIC, SOIC-20
文件页数: 135/158页
文件大小: 1020K
代理商: MC68HC908RK2DW
Internal Clock Generator Module (ICG)
MC68HC908RK2 Data Sheet, Rev. 5.1
78
Freescale Semiconductor
6.7 I/O Registers
The ICG contains five registers, summarized in Figure 6-11. These registers are:
ICG control register, ICGCR
ICG multiplier register, ICGMR
ICG trim register, ICGTR
ICG DCO divider control register, ICGDVR
ICG DCO stage control register, ICGDSR
Several of the bits in these registers have interaction where the state of one bit may force another bit to
a particular state or prevent another bit from being set or cleared. A summary of this interaction is shown
Addr.
Register Name
Bit 7
654321
Bit 0
$0036
Internal Clock Generator
Control Register (ICGCR)
Read:
CMIE
CMF
CMON
CS
ICGON
ICGS
ECGON
ECGS
Write:
Reset:
00001000
$0037
Internal Clock Generator
Multiplier Register (ICGMR)
Read:
R
N6N5
N4N3N2N1N0
Write:
Reset:
00010101
$0038
Internal Clock Generator
Trim Register (ICGTR)
Read:
TRIM7
TRIM6
TRIM5
TRIM4
TRIM3
TRIM2
TRIM1
TRIM0
Write:
Reset:
10000000
$0039
ICG DCO Divider Control
Register (ICGDVR)
Read:
RRRR
DDIV3
DDIV2
DDIV1
DDIV0
Write:
Reset:
0000
UUUU
$003A
ICG DCO Stage Register
(ICGDSR)
Read:
DSTG7
DSTG6
DSTG5
DSTG4
DSTG3
DSTG2
DSTG1
DSTG0
Write:
Reset:
Unaffected by reset
= Unimplemented
R
= Reserved
U = Unaffected
Figure 6-11. ICG I/O Register Summary
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