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參數資料
型號: MC68CK338
廠商: Motorola, Inc.
元件分類: 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
文件頁數: 88/133頁
文件大小: 798K
代理商: MC68CK338
MOTOROLA
88
MC68CK338
MC68CK338TS/D
NOTE
In order to count, the FCSM requires the CPSM clock signals to be present. On
coming out of reset, the FCSM does not count internal or external events until the
prescaler in the CPSM starts running (when the software sets the PRUN bit). This
allows all counters in the CTM6 submodules to be synchronized.
Figure 20 FCSM Block Diagram
6.7.1 FCSM Registers
The FCSM contains a status/interrupt/control register and a counter register. All unused bits and re-
served address locations return zero when read. Writing to unused bits and reserved address locations
has no effect.
COF — Counter Overflow Flag
This status flag indicates whether or not a counter overflow has occurred. An overflow is defined to be
the transition of the counter from $FFFF to $0000. If the IL field is non-zero, an interrupt request is gen-
erated when the COF bit is set.
0 = Counter overflow has not occurred
1 = Counter overflow has occurred
This flag is set only by hardware and cleared only by software or a system reset. To clear the flag, first
read the register with COF set to one, then write a zero to the bit. COF is cleared only if no overflow
occurs between the read and write operations.
FCSM3SIC —
FCSM Status/Interrupt/Control Register
$YFF418
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
COF
IL[2:0]
IARB3
0
DRVA
DRVB
IN
0
0
0
0
CLK[2:0]
RESET:
0
0
0
0
0
0
0
0
U
0
0
0
0
0
0
0
CTM FCSM BLOCK
16-BIT UP COUNTER
IL2
IL1
IL0
IARB3
COF
EDGE
DETECT
TIME BASE BUSES
INTERRUPT
CONTROL
CLOCK
SELECT
IN
CLK1 CLK0
CLK2
OVERFLOW
BUS
SELECT
CONTROL REGISTER BITS
CONTROL REGISTER BITS
DRVA DRVB
CONTROL REGISTER BITS
6 CLOCKS (PCLKX) FROM PRESCALER
SUBMODULE BUS
TBBA
TBBB
INPUT PIN
CTMC
相關PDF資料
PDF描述
MC68EC060 32-Bit Microprocessors.(32位微處理器)
MC68EN360RC25V QUad Integrated Communications Controller Users Manual
MC68EN360CFE25 QUad Integrated Communications Controller Users Manual
MC68EN360FE25 AC 4C 4#12 PIN PLUG 023
MC68EN360FE25V QUad Integrated Communications Controller Users Manual
相關代理商/技術參數
參數描述
MC68CK338CPV14 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68CK338CPV14B1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:32-Bit Modular Microcontroller
MC68CM16Z1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series
MC68CM16Z1CFC16 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series
MC68CM16Z1CPV16 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series
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