SM5901AF
Command table
Write command summary
MS command 80
=
Anti-shock memory system settings
80hex 1000 0000
Bit
Name
Function
Encode sequence start/stop
H operation Reset level
D7 MSWREN
D6 MSWACL
D5 MSRDEN
D4 MSRACL
D3 MSDCN2
Start
Reset
Start
Reset
L
L
L
L
L
Write address reset
Decode sequence start/stop
Read address reset
MSDCN2=H, MSDCN1=H: 3-pair comparison start
MSDCN2=H, MSDCN1=L: 2-pair comparison start
MSDCN2=L, MSDCN1=H: Direct-connect start
MSDCN2=L, MSDCN1=L: Connect operation stop
Q data valid
D2 MSDCN1
L
D1
D0
WAQV
MSON
Valid
ON
L
L
Memory system ON
Extension I/O settings 81
=
Extension I/O port input/output settings
81hex 1000 0001
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
Function
H operation Reset level
UC4OE
UC3OE
UC2OE
UC1OE
Extension I/O port UC4 input/output setting
Extension I/O port UC3 input/output setting
Extension I/O port UC2 input/output setting
Extension I/O port UC1 input/output setting
Output
Output
Output
Output
L
L
L
L
Extension I/O output data settings 82
Extension port HIGH/LOW output level
A port setting is invalid if that port has already been defined as an input using the 81H command above.
=
82hex 1000 0010
Bit
D7
D6
D5
D4
Name
Function
H operation Reset level
D3 UC4WD
D2 UC3WD
D1 UC2WD
D0 UC1WD
Extension I/O port UC4 output data setting
Extension I/O port UC3 output data setting
Extension I/O port UC2 output data setting
Extension I/O port UC1 output data setting
H output
H output
H output
H output
L
L
L
L
NPC [ NIPPON PRECISION CIRCUITS INC ]
