參數(shù)資料
型號: SC9RS08KA1J3CDB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO6
封裝: 3 X 3 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, DFN-6
文件頁數(shù): 126/134頁
文件大?。?/td> 3114K
代理商: SC9RS08KA1J3CDB
Modulo Timer (RS08MTIMV1)
SC9RS08KA2 Series Data Sheet, Rev. 1
Freescale Semiconductor
91
11.1.3
Block Diagram
The block diagram for the modulo timer module is shown Figure 11-2.
Figure 11-2. Modulo Timer (MTIM) Block Diagram
11.2
External Signal Description
The MTIM includes one external signal, TCLK, used to input an external clock when selected as the
MTIM clock source. The signal properties of TCLK are shown in Table 11-1.
The TCLK input must be synchronized by the bus clock. Also, variations in duty cycle and clock jitter
must be accommodated. Therefore, the TCLK signal must be limited to one-fourth of the bus frequency.
The TCLK pin can be muxed with a general-purpose port pin. See the Pins and Connections chapter for
the pin location and priority of this function.
11.3
Register Definition
Each MTIM includes four registers, which are summarized in Table 11-2:
An 8-bit status and control register
An 8-bit clock configuration register
An 8-bit counter register
An 8-bit modulo register
Refer to the direct-page register summary in the memory section of this data sheet for the absolute address
assignments for all MTIM registers. This section refers to registers and control bits only by their names.
Table 11-1. Signal Properties
Signal
Function
I/O
TCLK
External clock source input into MTIM
I
BUSCLK
TCLK
SYNC
CLOCK
SOURCE
SELECT
PRESCALEAND
SELECT DIVIDE
BY
8-BIT MODULO
(MTIMMOD)
8-BIT COMPARATOR
TRST
TSTP
CLKS
PS
XCLK
TOIE
MTIM
INTERRUPT
REQUEST
TOF
8-BIT COUNTER
(MTIMCNT)
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