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ST72411R bảng dữ liệu(PDF) 18 Page - STMicroelectronics

tên linh kiện ST72411R
Giải thích chi tiết về linh kiện  8-BIT MCU WITH SMARTCARD INTERFACE, LCD DRIVER, 8-BIT TIMER, SAFE RESET AND SUPPLY MONITORING
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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ST72411R bảng dữ liệu(HTML) 18 Page - STMicroelectronics

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3.2 RESET SEQUENCE MANAGER
The RESET sequence manager includes two re-
set sources as shown in Figure 11:
s
External RESET source pulse
s
Internal LVDS RESET (Low Voltage Detection)
These sources act on the RESET PIN and it is al-
ways kept low during the delay phase.
The RESET service routine vector is fixed at ad-
dresses FFFEh-FFFFh in the ST7 memory map.
A 4096 CPU clock cycle delay allows the oscillator
to stabilise and to ensure that recovery has taken
place from the Reset state.
The RESET vector fetch phase duration is 2 clock
cycles.
Figure 11. Reset Block Diagram
fCPU
RESET
RON
VDD
LVD RESET
INTERNAL
RESET



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