MCP2515-E/PRB2 Microchip Technology, MCP2515-E/PRB2 Datasheet - Page 55

• Manufacturer Part Number: MCP2515-E/PRB2
• Description: CAN controller with SPI interface, 125 deg C, -40C to +125C, 18-PDIP, TUBE
• Manufacturer: Microchip Technology

9.0
The MCP2515 differentiates between two resets:
1.
2.
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
held in reset for a minimum of 2 µs after V
operating voltage, as indicated in the electrical
specification (t
FIGURE 9-1:
© 2007 Microchip Technology Inc.
Hardware Reset – Low on RESET pin.
SPI Reset – Reset via SPI command.
9-1). The values must be such that the device is
RESET
RL
Note 1: The diode D helps discharge the capacitor quickly when V
).
2: R1 = 1 kΩ to 10 kΩ will limit any current flowing into RESET from external
RESET PIN CONFIGURATION EXAMPLE
capacitor C, in the event of RESET pin breakdown due to Electrostatic
Discharge (ESD) or Electrical Overstress (EOS).
V
DD
D
(1)
DD
V
reaches
DD
R
C
R1
(2)
RESET
DD
powers down.
MCP2515
DS21801E-page 55