參數(shù)資料
型號: MCP2515-E/P
元件分類: 微控制器/微處理器
英文描述: 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PDIP18
封裝: 0.300 INCH, LEAD FREE, PLASTIC, DIP-18
文件頁數(shù): 51/88頁
文件大?。?/td> 1205K
代理商: MCP2515-E/P
2010 Microchip Technology Inc.
DS21801F-page 55
MCP2515
9.0
RESET
The MCP2515 differentiates between two resets:
1.
Hardware Reset – Low on RESET pin
2.
SPI Reset – Reset via SPI command
Both of these resets are functionally equivalent. It is
important to provide one of these two resets after
power-up to ensure that the logic and registers are in
their default state. A hardware reset can be achieved
automatically by placing an RC on the RESET pin (see
Figure 9-1). The values must be such that the device is
held in reset for a minimum of 2 s after VDD reaches
operating voltage, as indicated in the electrical
specification (tRL).
FIGURE 9-1:
RESET PIN CONFIGURATION EXAMPLE
RESET
R1(2)
VDD
R
C
D(1)
Note 1: The diode D helps discharge the capacitor quickly when VDD powers down.
2: R1 = 1 k
Ω to 10 kΩ will limit any current flowing into RESET from external
capacitor C, in the event of RESET pin breakdown due to Electrostatic
Discharge (ESD) or Electrical Overstress (EOS).
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