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參數(shù)資料
| 型號(hào)： | MC68CK338 |
| 廠商： | Motorola, Inc. |
| 元件分類(lèi)： | 32位微控制器 |
| 英文描述： | Highly Integrated, Low-Power, 32-Bit Microcontroller |
| 中文描述： | 高度集成，低功耗，32位微控制器 |
| 文件頁(yè)數(shù)： | 85/133頁(yè) |
| 文件大小： | 798K |
| 代理商： | MC68CK338 |
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MC68CK338
MC68CK338TS/D
MOTOROLA
85
IARB[2:0] — Interrupt Arbitration Field
This bit field and the IARB3 bit within each submodule provide 15 different interrupt arbitration numbers
that can be used to arbitrate between interrupt requests occurring on the IMB with the same interrupt
priority level.
The IARB field defaults to zero on reset, preventing the module from arbitrating during an IACK cycle.
If no arbitration takes place during the IACK cycle, the SIML generates a spurious interrupt, indicating
to the system that the interrupt arbitration number has not been initialized.
The CTM6 allows two different arbitration numbers to be used by providing each submodule with its own
IARB3 bit (which can be set or cleared in software). Once IARB[2:0] are assigned in the BIUSM, they
apply to all CTM6 interrupt requests. Therefore, CTM6 submodule interrupts can be prioritized with re-
quests from other modules at the same interrupt level. IARB[2:0] are cleared by reset.
Bits[7:6], [4:1] — Not Implemented
TBRS1, TBRS0 — Time Base Register Bus Select Bits
These bits specify which time base bus is accessed when the time base register (BIUTBR) is read. Re-
fer to
Table 48
.
BIUTEST —
BIUSM Test Register
BIUTEST is used during factory testing of the CTM6. Accesses to BIUTEST must be made while the
MCU is in test mode.
$YFF402
BIUTBR is a read-only register used to read the value present on one of the time base buses. The time
base bus being accessed is determined by TBRS1 and TBRS0 in BIUMCR. Writing to BIUTBR has no
effect during normal operation.
6.5 Counter Prescaler Submodule (CPSM)
The counter prescaler submodule (CPSM) is a programmable divider system that provides the CTM6
counters with a choice of six clock signals (PCLKx) derived from the sixth frequency MCU system clock
(f
sys
). Five of these frequencies are derived from a fixed divider chain. The divide ratio is software se-
lectable from a choice of four divide ratios.
The CPSM is contained within the BIUSM.
Figure 19
shows a block diagram of the CPSM.
Table 48 Time Base Register Bus Select Bits
TBRS1
0
0
1
1
TBRS0
0
1
0
1
Time Base Bus
TBB1
TBB2
TBB3
TBB4
BIUTBR —
BIUSM Time Base Register
$YFF404
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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| MC68EC060 | 32-Bit Microprocessors.(32位微處理器) |
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| MC68EN360CFE25 | QUad Integrated Communications Controller Users Manual |
| MC68EN360FE25 | AC 4C 4#12 PIN PLUG 023 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68CK338CPV14 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68CK338CPV14B1 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68CM16Z1 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:M68HC16Z Series |
| MC68CM16Z1CFC16 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:M68HC16Z Series |
| MC68CM16Z1CPV16 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:M68HC16Z Series |
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