
15
AT85C51SND3Bx
7632A–MP3–03/06
Internal Pin Structure Table 17. Detailed Internal Pin Structure
Circuit
(1)
Type Pins
Input/Output RST
Input/Output
P0.7:0
P1.7:0
P2.7:0
P3.5:0
P4.6:0
P5.3:0
OCDT
Input/Output P3.7:6
Input
KIN3:0
SDINS
SDLCK
SMINS
SMLCK
TST
ISP
UID
INT0
INT1
T0
RXD
OCDR
Input
SWR
SA0
SRD
SCS
SS
Input/Output
NFD7:0
SD7:0
LD7:0
SDCMD
SDDAT3:0
MISO
MOSI
R
RST
IOVSS
N
IOVDD
N
Ps
IOVDD IOVDD
2 osc
Latch Output
periods
Pm Pw
IOVDD
IOVSS
N
Ps
HVDD HVDD
2 osc
Latch Output
periods
Pm Pw
HVDD
IOVSS
Pm Pw
IOVSS
IOVDDIOVDD
N
P
IOVSS
IOVDD
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