SM5903CF Datasheet, PDF (12/31 Pages) Nippon Precision Circuits Inc – compression and non compression type anti-shock memory controller

Command table
Write command summary
MS command 80
SM5903CF
Anti-shock memory system settings
Bit Name
D7 MSWREN
D6 MSWACL
D5 MSRDEN
D4 MSRACL
D3 MSDCN2
D2 MSDCN1
D1 WAQV
D0 MSON
Function
Encode sequence start/stop
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
Memory system ON
80hex = 1000 0000
H operation Reset level
Start
L
Reset
L
Start
L
Reset
L
L
L
Valid
L
ON
L
Extension I/O settings 81
Extension I/O port input/output settings
Bit Name
D7
D6
D5
D4 UC5OE
D3 UC4OE
D2 UC3OE
D1 UC2OE
D0 UC1OE
Function
Extension I/O port UC5 input/output setting
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
81hex = 1000 0001
H operation Reset level
Output
L
Output
L
Output
L
Output
L
Output
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.
Bit Name
Function
D7
D6
D5
D4 UC5WD
Extension I/O port UC5 output data setting
D3 UC4WD
Extension I/O port UC4 output data setting
D2 UC3WD
Extension I/O port UC3 output data setting
D1 UC2WD
Extension I/O port UC2 output data setting
D0 UC1WD
Extension I/O port UC1 output data setting
82hex = 1000 0010
H operation Reset level
H output
L
H output
L
H output
L
H output
L
H output
L
NIPPON PRECISION CIRCUITS-12