MCP25020-E Datasheet, PDF (1/66 Pages) Microchip Technology – CAN I/O Expander Family

MCP2502X/5X
CAN I/O Expander Family
Features
• Implements CAN V2.0B
- Programmable bit rate up to 1 Mb/s
- One programmable mask
- Two programmable filters
- Three auto-transmit buffers
- Two message reception buffers
- Does not require synchronization or
configuration messages
• Hardware Features
- Non-volatile memory for user configuration
- User configuration automatically loaded on
power-up
- Eight general-purpose I/O lines individually
selectable as inputs or outputs
- Individually selectable transmit-on-pin-
change for each input
- Four 10-bit, analog input channels with
programmable conversion clock and VREF
sources (MCP2505X devices only)
- Message scheduling capability
- Two 10-bit PWM outputs with independently
programmable frequencies
- Device configuration can be modified via
CAN bus messages
- In-Circuit Serial Programming™ (ICSP™) of
default configuration memory
- Optional 1-wire CAN bus operation
• Low-power CMOS technology
- Operates from 2.7V to 5.5V
- 10 mA active current, typical
- 30 µA standby current (CAN Sleep mode)
• 14-pin PDIP (300 mil) and SOIC (150 mil)
packages
• Available temperature ranges:
- Industrial (I): -40°C to +85°C
- Extended (E): -40°C to +125°C
Description
The MCP2502X/5X devices operate as I/O expanders
for a Controller Area Network (CAN) system,
supporting CAN V2.0B active, with bus rates up to
1 Mb/s. The MCP2502X/5X allows a simple CAN node
to be implemented without the need for a
microcontroller.
The devices are identical, with the following
exceptions:
Device
One Wire
A/D
Digital
CANbus
MCP25020
No
No
MCP25025
No
Yes
MCP25050
Yes
No
MCP25055
Yes
Yes
The MCP2502X/5X devices feature a number of
peripherals, including digital I/Os, four-channel 10-bit
A/D (MCP2505X) and PWM outputs with automatic
message transmission on change-of-input state. This
includes an analog input exceeding a preset threshold.
One mask and two acceptance filters are provided to
give maximum flexibility during system design with
respect to identifiers that the device will respond to.
The device can also be configured to automatically
transmit a unique message whenever any of several
error conditions occur.
The device is pre-programmed in non-volatile memory
so that the part defaults to a specific configuration at
power-up.
© 2007 Microchip Technology Inc.
DS21664D-page 1