Solid-State Fingerprint Sensor
Function Table
CE1
H
X
L
L
L
CE2
X
L
H
H
H
RD
X
X
H
L
H
WR
X
X
H
H
L
Mode
De-selected
De-selected
Standby
Read
Write
Data Lines
High-Z
High-Z
High-Z
Data Out
Data In
Register Map
A3
0
0
0
0
0
0
0
A2
0
0
0
0
1
1
1
A1
0
0
1
1
0
0
1
A0
0
1
0
1
0
1
0
Access
Write
Write
Read/Write
Write
Write
Write
Write
Register
RAL
RAH
CAL
CAH
DTR
Description
Low Order Row Address Register
High Order Row Address Register
Low Order Column Address Register
High Order Column Address Register
Discharge Time Register
Discharge Current Register
Reserved
Address Register Descriptions
Refer to
Row Capture and A/D Conversion Timing
on page 9 to
calculate row capture and A/D conversion times.
RAL (A3-A0 Address 0000) Write Only
MSB
BIT7
RA7
BIT6
RA6
BIT5
RA5
y
r
a
n
i
m
i
l
e
r
P
DCR
RSR
BIT4
RA4
BIT3
RA3
BIT2
RA2
Function
Low Order Row Address Register
This register and bit 0 of RAH form the 9-bit Row Address Register
that selects the row to be captured. The 9-bit Row Address Register
selects a row address from 0 through 299. Writing the RAL starts a
row capture. Only RAL has to be written if RAH doesn’t change,
otherwise RAH has to be written before RAL.
LSB
BIT1
RA1
BIT0
RA0
Bit Number
[7:0]
Bit Name
RA[7:0]
Low eight bits of Row Address Register.
4
Fujitsu Microelectronics, Inc.
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
