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: 28/64页
文件大小: 1232K
代理商: MCP25025-I/P
MCP2502X/5X
DS21664C-page 34
2003 Microchip Technology Inc.
REGISTER 5-6:
OPTREG1 REGISTER
R/W-1
U-0
R/W-0
GPPU
CLKEN
CLKPS1
CLKPS0
CMREQ
AQT1
AQT0
bit 7
bit 0
bit 7
GPPU: Weak pull-up enabled
1
= Weak pull-ups disabled
0
= Weak pull-ups enabled (GP7:GP0)
bit 6
CLKEN:
1
= Clock Out Function disabled
0
= Clock Out Function enabled
bit 5-4
CLKPS1:CLKPS0: CLKOUT Prescaler bits
00
= FOSC/1
01
= FOSC/2
10
= FOSC/4
11
= FOSC/8
bit 3
Reserved:
bit 2
CMREQ: Requests mode of operation (allows mode changes via the CAN bus)
1
= Requests Listen-only mode
0
= Requests Normal mode *
* CMREQ must be cleared as default to avoid device entering Listen-only mode on first “Input”
message.
bit 1-0
AQT1:AQT0: Analog Acquisition Time bits
00
= 64TOSC
01
= 2(64TOSC)
10
= 4(64TOSC)
11
= 8(64TOSC)
(e.g., AQT1:AQT0 => 00 => 2.56 s for a 25 MHz FOSC)
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
- n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
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