參數(shù)資料
型號: MCP25050-E/SL
廠商: Microchip Technology
文件頁數(shù): 46/66頁
文件大小: 0K
描述: IC I/O EXPANDER CAN 8B 14SOIC
標(biāo)準(zhǔn)包裝: 57
接口: CAN
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時鐘: 25MHz
電源電壓: 4.5 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 14-SOIC
包裝: 管件
包括: ADC,存儲器,PWM
其它名稱: MCP25050E/SL
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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