参数资料
型号: MCP25050-E/P
厂商: Microchip Technology
文件页数: 46/66页
文件大小: 0K
描述: IC I/O EXPANDER CAN 8B 14DIP
标准包装: 30
接口: CAN
输入/输出数: 8
中断输出:
频率 - 时钟: 25MHz
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 通孔
封装/外壳: 14-DIP(0.300",7.62mm)
供应商设备封装: 14-PDIP
包装: 管件
包括: ADC,存储器,PWM
配用: DV250501-ND - KIT DEV CAN MCP250XX
其它名称: MCP25050E/P
MCP2502X/5X
DS21664D-page 50
2007 Microchip Technology Inc.
8.7
In-Circuit Serial Programming
The MCP2502X/5X can be serially programmed while
in the end application circuit. This is simply done with
two lines for clock and data, and three other lines for
power, ground and the programming voltage. This
allows
customers
to
manufacture
boards
with
unprogrammed devices and then program the device
just before shipping the product, also allowing the
most recent firmware (or a custom firmware) to be
programmed.
The device is placed into a program/verify mode by
holding the GP4 and GP5 pins low while raising GP7
(VPP) pin from VIL to VIH (see the MCP2502X/5X
programming
specification,
“MCP250XX
In-Circuit
Serial Programming (ICSP)”, DS20072, for more
information). GP4 becomes the programming data and
GP5 becomes the programming clock. Both GP4 and
GP5 are Schmitt Trigger inputs in this mode. The signal
definitions are summarized in Table 8-1
TABLE 8-1:
IN-CIRCUIT SERIAL
PROGRAMMING PIN
FUNCTIONS
Pin Name
Pin
Number
Programming Mode
Function
VSS
7
Ground
GP4
5
Data
GP5
6
Clock
GP7
11
VPP
VDD
14
Power
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