m52957fp Mitsumi Electronics, Corp., m52957fp Datasheet - Page 8

• Manufacturer Part Number: m52957fp
• Description: Distance Detection Signal Processing For 3v Supply Voltage
• Manufacturer: Mitsumi Electronics, Corp.

MASK OPTION
(1) The second integration current value can be doubled.
(2) Control terminal variation
This type uses CLALV, STB, RESET, INT, HOLD, SOUT terminal as
I/F terminal to the microcomputer.
This is the typical type at M52957FP.
This type does not connect CLALV, STB, RESET terminals to the
microcomputer.
When above mentioned terminals are not connected to the
microcomputer without changing mask,connect each terminal to
the ground. In this case,clamp level becomes 0 and standby
function is lost. Power on reset in IC is used as reset.
(a) CLALV
1. Clamp level fixation
2. Clamp level 2 step changeover
1
2
3
Full spec (typical)
Most simplified type
Explanation of the terminal that can be simplified.
(2.5
In the typical type,16way clamp levels can be set by the external
control,but also the terminal can be simplified by mask option
as follows.
Selects 1 point from 16 steps of clamp level and fixes it.
Selects 2 points from clamp level and switches it by changing
CLALV terminal
there is a following constraint.
11
C
L
A
L
V
5.0 A)
S
T
B
5
HIGH/LOW. However,as selecting 2 points,
MICROCOMPUTER
MICROCOMPUTER
R
E
S
E
T
7
DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE
N
N
T
9
T
9
I
I
10
10
H
O
D
H
O
D
L
L
O
U
O
S
T
8
S
U
T
8
Fixes 3 parts of 4 switches correspond to each bit in figure to ON or
OFF,controls another part by CLALV terminal .
(b) STB
(c) RESET
When no standby function required such as V
OFF,STB terminal can be eliminated.
Since IC include power on reset circuit,RESET terminal can be
eliminated. As merit of controlling RESET terminal from
outside,distance detection time can be shortened because
there is no need to switch V
consecutive distance detection.
0.125nA
MITSUBISHI ICs (AV COMMON)
0.25nA
CC
or STB Terminal ON /OFF at
0.5nA
M52957FP
CC
1.0nA
is switched ON/
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