參數(shù)資料
型號: MC16S2CPU20B1
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, 20.97 MHz, MICROCONTROLLER, PQFP100
封裝: TQFP-100
文件頁數(shù): 2/104頁
文件大小: 812K
代理商: MC16S2CPU20B1
MOTOROLA
MC68HC16S2
10
MC68HC16S2TS/D
3 System Integration Module
The system integration module (SIM) consists of six functional blocks that control system startup, ini-
tialization, configuration, and external bus. Figure 4 shows the SIM block diagram.
Figure 4 SIM Block Diagram
3.1 Overview
The system configuration block controls MCU configuration and operating mode.
The clock synthesizer generates clock signals used by the SIM, other IMB modules, and external de-
vices. In addition, a periodic interrupt generator supports execution of time-critical control routines.
The system protection block provides bus and software watchdog monitors.
The chip-select block provides eleven general-purpose chip-select signals and a boot ROM chip-select
signal. Both general-purpose and boot ROM chip-select signals have associated base address regis-
ters and option registers.
The external bus interface handles the transfer of information between IMB modules and external ad-
dress space.
The system test block incorporates hardware necessary for testing the MCU. It is used to perform fac-
tory tests, and its use in normal applications is not supported.
Table 7 shows the SIM address map, which occupies 128 bytes. Unused registers within the 128-byte
address space return zeros when read.
S(C)IM BLOCK
SYSTEM CONFIGURATION
CLOCK SYNTHESIZER
CHIP-SELECTS
EXTERNAL BUS INTERFACE
FACTORY TEST
CLKOUT
EXTAL
MODCLK
CHIP-SELECTS
EXTERNAL BUS
RESET
TSC
FREEZE/QUOT
XTAL
SYSTEM PROTECTION
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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