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DVR 数据表(PDF) 248 Page - Microchip Technology

部件名 DVR
功能描述  16-Bit General Purpose Microcontrollers with 256-Kbyte Flash and 16-Kbyte RAM in Low Pin Count Packages
PDF  416 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

DVR 数据表(HTML) 248 Page - Microchip Technology

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DS30010118D-page 248
 2016-2018 Microchip Technology Inc.
REGISTER 20-7:
PMCSxMD: EPMP CHIP SELECT x MODE REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
ACKM1
ACKM0
AMWAIT2
AMWAIT1
AMWAIT0
—
—
—
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
DWAITB1
DWAITB0
DWAITM3
DWAITM2
DWAITM1
DWAITM0
DWAITE1
DWAITE0
bit 7
bit 0
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
bit 15-14
ACKM<1:0>: Chip Select x Acknowledge Mode bits
11 = Reserved
10 = PMACKx is used to determine when a read/write operation is complete
01 = PMACKx is used to determine when a read/write operation is complete with time-out
(If DWAITM<3:0> = 0000, the maximum time-out is 255 TCY or else it is DWAITM<3:0> cycles.)
00 = PMACKx is not used
bit 13-11
AMWAIT<2:0>: Chip Select x Alternate Master Wait State bits
111 = Wait of ten alternate master cycles
...
001 = Wait of four alternate master cycles
000 = Wait of three alternate master cycles
bit 10-8
Unimplemented: Read as ‘0’
bit 7-6
DWAITB<1:0>: Chip Select x Data Setup Before Read/Write Strobe Wait State bits
11 = Wait of 3¼ TCY
10 = Wait of 2¼ TCY
01 = Wait of 1¼ TCY
00 = Wait of ¼ TCY
bit 5-2
DWAITM<3:0>: Chip Select x Data Read/Write Strobe Wait State bits
For Write Operations:
1111 = Wait of 15½ TCY
...
0001 = Wait of 1½ TCY
0000 = Wait of ½ TCY
For Read Operations:
1111 = Wait of 15¾ TCY
...
0001 = Wait of 1¾ TCY
0000 = Wait of ¾ TCY
bit 1-0
DWAITE<1:0>: Chip Select x Data Hold After Read/Write Strobe Wait State bits
For Write Operations:
11 = Wait of 3¼ TCY
10 = Wait of 2¼ TCY
01 = Wait of 1¼ TCY
00 = Wait of ¼ TCY
For Read Operations:
11 = Wait of 3 TCY
10 = Wait of 2 TCY
01 = Wait of 1 TCY
00 = Wait of 0 TCY



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