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參數(shù)資料
| 型號(hào)： | MC68HC16S2CPU20 |
| 廠商： | MOTOROLA 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(yè)數(shù)： | 16/104頁(yè) |
| 文件大?。?/td> | 640K |
| 代理商： | MC68HC16S2CPU20 |
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MC68HC16S2
MOTOROLA
MC68HC16S2TS/D
19
Figure 8 LPSTOP Flowchart
3.4 System Protection Block
System protection includes a bus monitor, a halt monitor, a spurious interrupt monitor, and a software
watchdog timer. These functions reduce the number of external components required for complete sys-
tem control. Figure 9 shows the system protection block.
USING
EXTERNAL CLOCK?
NO
YES
USE SYSTEM CLOCK
AS SIMCLK IN LPSTOP?
NO
YES
SET STSIM = 1
fsimclk
1 = f
sys
IN LPSTOP
WANT CLKOUT
ON IN LPSTOP?
NO
YES
NO
YES
WANT CLKOUT
ON IN LPSTOP?
SET STSIM = 0
fsimclk
1 = f
ref
IN LPSTOP
SET STEXT = 1
fclkout
2 = f
sys
feclk = ÷ fsys
IN LPSTOP
SET STEXT = 0
fclkout
2 = 0 Hz
feclk = 0 Hz
IN LPSTOP
SET STEXT = 1
fclkout
2 = f
ref
feclk = 0 Hz
IN LPSTOP
SET STEXT = 0
fclkout
2 = 0 Hz
feclk = 0 Hz
IN LPSTOP
ENTER LPSTOP
NOTES:
1. THE SIMCLK IS USED BY THE PIT, IRQ, AND INPUT BLOCKS OF THE SIM.
2. CLKOUT CONTROL DURING LPSTOP IS OVERRIDDEN BY THE EXOFF BIT IN SIMCR. IF EXOFF = 1, THE CLKOUT
PIN IS ALWAYS IN A HIGH IMPEDANCE STATE AND STEXT HAS NO EFFECT IN LPSTOP. IF EXOFF = 0, CLKOUT
IS CONTROLLED BY STEXT IN LPSTOP.
SETUP INTERRUPT
TO WAKE UP MCU
FROM LPSTOP
LPSTOPFLOW
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC16Z1CAG | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC16Z1CAG16 | 功能描述:16位微控制器 - MCU 16 BIT MCU 1K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC68HC16Z1CAG16 | 制造商:Freescale Semiconductor 功能描述:IC16-BIT MICROCONTROLLER |
| MC68HC16Z1CAG20 | 功能描述:16位微控制器 - MCU 16 BIT MCU 1K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC68HC16Z1CAG20 | 制造商:Freescale Semiconductor 功能描述:Microcontroller |
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