参数资料
型号: MCP25025-I/P
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PDIP14
封装: 0.300 INCH, PLASTIC, DIP-14
文件页数: 23/64页
文件大小: 1232K
代理商: MCP25025-I/P
2003 Microchip Technology Inc.
DS21664C-page 3
MCP2502X/5X
1.0
DEVICE OVERVIEW
This document contains device-specific information on
the MCP2502X/5X family of CAN I/O expanders. The
CAN protocol is not discussed in depth in this
document. Additional information on the CAN protocol
can be found in the CAN specification, as defined by
Robert Bosch GmbH.
Figure 1-1 is the block diagram of the MCP2502X/5X
and Table 1-1 is the pinout description.
The following sections detail the modules as listed in
FIGURE 1-1:
MCP2502X/5X BLOCK DIAGRAM
TABLE 1-1:
PINOUT DESCRIPTION
GPIO
GP4/VREF-
GP3/AN3/PWM2
GP2/AN2/PWM1
GP1/AN1
GP0/AN0
GP5/VREF+
GP6/CLKOUT
GP7RST/VPP
User
Timing
Generation
OSC1/CLKIN
OSC2/CLKOUT
CAN
Protocol
Engine
RXCAN
TXCAN/
A/D
PWM1
PWM2
Memory
*
TXRXCAN
* Only the MCP2505X devices have the A/D module.
State Machine
and
Control Logic
Pin
Name
Pin
Number
Standard
Function
Alternate
Function
Programming
Mode Function
GP0/AN0 *
1
Bidirectional I/O pin, TTL input buffer
Analog input channel
None
GP1/AN1 *
2
Bidirectional I/O pin, TTL input buffer
Analog input channel
None
GP2/AN2/PWM2 *
3
Bidirectional I/O pin, TTL input buffer
Analog input/PWM output
None
GP3/AN3/PWM3 *
4
Bidirectional I/O pin, TTL input buffer
Analog input/PWM output
None
GP4/VREF-
5
Bidirectional I/O pin, TTL input buffer
External VREF-Data
GP5/VREF+
6
Bidirectional I/O pin, TTL input buffer
External VREF input
Clock
VSS
7
Ground
None
Ground
OSC1/CLKIN
8
External oscillator input
External clock input
None
OSC2
9
External oscillator output
None
GP6/CLKOUT
10
Bidirectional I/O pin, TTL input buffer
CLKOUT output
None
GP7/RST/VPP
11
Input pin, TTL input buffer
External Reset input
Vpp
RXCAN
12
CAN data receive input
Not connected for 1-wire
None
TXCAN/TXRXCAN
13
CAN data transmit output
CAN TX and RX for 1-wire
operation (MCP250X5)
None
VDD
14
Power
None
Power
* Only the MCP2505X devices have the A/D module.
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