UPD161661 データシートの表示（PDF） - NEC => Renesas Technology
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UPD161661 Datasheet PDF : 15 Pages
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µPD161661
(2/2)
Symbol
Pin Name
Pad No.
I/O
Description
MVS
VS regulator input
7
RSEL
Internal resistor selection for
41
regulator
VREFSEL Regulator reference voltage
43
input selection
LPM
Low power mode signal
2
ACS
Amp current selection
42
LACS
Amp current selection
44
−
Feedback input (+) of the regulator amplifier for VS output.
This pin is used as follows according to the setting of
EXRVS.
EXRVS = H : To connect external resistor.
EXRVS = L : Leave it open.
I
This pin selects the internal resistor for the regulator and
sets the source driver supply voltage output from the VS
pin as follows. Note that this pin setting is valid when
EXRVS = L.
RSEL = H: 5.0 V VS output voltage
RSEL = L: 4.0 V VS output voltage
I
This pin selects external or internal reference voltage of
VS regulator. When external reference is selected, input
reference voltage from VREF pin.
VREFSEL = H : External reference voltage is selected.
VREFSEL = L : Internal reference voltage is selected.
I
Control signal for low power mode.
LPM = H : Low power mode
LPM = L : Normal mode
The settings made by the LACS and LFS pins are valid in
the low power mode, and settings made by the ACS and
FS pins are valid in the normal mode.
Connect to low power mode setting pin (LPMP) of source
driver or control port output of CPU.
I
To select Amp current in normal mode.
For detail, refer to 4. MODE DESCRIPTION.
I
To select Amp current in low power mode.
For detail, refer to 4. MODE DESCRIPTION.
FS
OSC frequency selection
40
I
To select OSC frequency for DC/DC converter when in
normal mode.
For detail, refer to 4. MODE DESCRIPTION.
LFS
Low power mode
39
I
To select OSC frequency for DC/DC converter in low
OSC frequency selection
power mode.
C1+, C1−
C2+, C2−
C3+, C3−
C4+, C4−
C5+, C5−
Capacitor connect pin for
boost
15, 14
17, 16
19, 18
21, 20
23, 22
For detail, refer to 4. MODE DESCRIPTION.
−
Capacitor connect pin for boost of DC/DC converter.
Connect these pins between each Cn+ and Cn−.
The capacitance and tolerance of each capacitor are
shown below.
Capacitance : 1 µF
Tolerance : 10 V
TESTIN1 to Test
32 to 34
I
IC test mode pin.
TESTIN3
Normally, leave it open.
TESTOUT TEST output
35
O
IC test mode pin.
Normally, leave it open.
DUMMY Dummy pin
1, 5, 6, 12,
−
Dummy pin. Leave it open.
13, 24, 25,
27, 29 to 31,
36, 37, 47,
48
6
Preliminary Product Information S15917EJ1V0PM
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