參數(shù)資料
型號： ST72C171K2B6
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
封裝： SHRINK, PLASTIC, DIP-32
文件頁數(shù)： 62/152頁
文件大小： 2156K
代理商： ST72C171K2B6
ST72C171
17/152
4.2.1 Reset Sequence Manager (RSM)
The RSM block of the CROSS Module includes
three RESET sources as shown in Figure 10:
s
EXTERNAL RESET SOURCE pulse
s
Internal LVD RESET (Low Voltage Detection)
s
Internal WATCHDOG RESET
These sources act on the RESET PIN and it is al-
ways kept low during the READ OPTION RESET
phase.
The RESET service routine vector is fixed at the
FFFEh-FFFFh addresses in the ST7 memory
map.
Figure 10. Reset Block Diagram
The basic RESET sequence consists of 4 phases
as shown in Figure 11:
s
OPTION BYTE reading to configure the device
s
Delay depending on the RESET source
s
4096 cpu clock cycle delay
s
RESET vector fetch
The duration of the OPTION BYTE reading phase
(tROB) is defined in the Electrical Characteristics
section. This first phase is initiated by an external
RESET pin pulse detection, a Watchdog RESET
detection, or when VDD rises up to VLVDopt.
The 4096 cpu clock cycle delay allows the oscilla-
tor to stabilise and to ensure that recovery has tak-
en place from the Reset state.
The RESET vector fetch phase duration is 2 clock
cycles.
Figure 11. RESET Sequence Phases
fCPU
COUN
T
E
R
RESET
RON
VDD
WATCHDOG RESET
LVD RESET
INTERNAL
RESET
READ OPTION RESET
RESET
READ
OPTION BYTE
INTERNAL RESET
4096 CLOCK CYCLES
FETCH
VECTOR
DELAY
tROB
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72C171K2M6 功能描述:8位微控制器 -MCU Flash 8K SPI/SCI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST72C215G2B6 功能描述:8位微控制器 -MCU Flash 8K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST72C215G2M3 制造商:STMicroelectronics 功能描述:MCU 8-Bit ST7 CISC 8KB Flash 3.3V/5V 28-Pin SO Tube 制造商:STMicroelectronics 功能描述:MCU 8BIT ST7 CISC 8KB FLASH 3.3V/5V 28SOIC - Rail/Tube
ST72C215G2M5 制造商:STMicroelectronics 功能描述:MCU 8BIT ST7 CISC 8KB FLASH 3.3V/5V 28SOIC - Rail/Tube
ST72C215G2M6 功能描述:8位微控制器 -MCU Flash 8K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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