BU9716BK 데이터 시트보기 (PDF) - ROHM Semiconductor
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BU9716BK Datasheet PDF : 11 Pages
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Standard ICs
BU9716BK / BU9716BKV
•Pin descriptions (BU9716BK)
Pin No. Pin name I / O
Function
1 - 32
S1 - S32
O
Output pin for segment data. Outputs consistent LCD drive voltage to the
data corresponding to COM1 to COM3.
33
COM1
34
COM2 O Common driver output. The frame frequency is fC = (fOSC / 384) Hz
35
COM3
Processing
when not
used
OPEN
OPEN
36
RES
I Reset input. At RES = L, internal data (including control data) is reset.
VDD
41
OSC — Oscillator pin (for common and segment alternating waveforms)
VSS
42
CS
I Chip select input. At CS = H, data can be transferred.
VSS
43
CK
I Synchronous clock input for serial data transfer
VSS
44
DI
I Serial data input
VSS
38
VDD1 — Internal reference voltage for LCD drive. In 1 / 2 bias mode, this is connected to VDD2. OPEN
39
VDD2 — Internal reference voltage for LCD drive. In 1 / 2 bias mode, this is connected to VDD1. OPEN
•Electrical characteristics (unless otherwise noted, Ta = 25°C, VDD = 4.5V to 5.5V, VSS = 0V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Input high level voltage
VIH
0.8VDD
—
VDD
V
CS, CK, DI, RES
Input low level voltage
VIL
0
—
0.2VDD
V
CS, CK, DI, RES
Input high level current
IIH
0
—
6.0
µA
CS, CK, DI, RES, VI = VDD
Input low level current
IIL
0
—
6.0
µA
CS, CK, DI, RES, VI = VSS
Output high level voltage
VSOH
VCOH
—
VDD – 1.0
—
—
VDD – 1.0
—
V
S1 ~ S32, IO = – 20µA
V
COM1 ~ COM3, IO = – 100µA
VSOL
—
1.0
—
Output low level voltage
VCOL
—
1.0
—
V
S1 ~ S32, IO = – 20µA
V
COM1 ~ COM3, IO = – 100µA
VCM1
VSM1
Intermediate output voltage VCM2
VSM2
Power supply current
VCM3
IQ
IDD
—
1 / 2VDD
± 1.0
—
—
2 / 3VDD
± 1.0
—
—
2 / 3VDD
± 1.0
—
—
1 / 3VDD
± 1.0
—
—
1 / 3VDD
± 1.0
—
—
30
70
—
100
300
V
COM1 ~ COM3, 1 / 2Bias
V
S1 ~ S32, 1 / 3Bias
V
COM1 ~ COM3, 1 / 3Bias
V
S1 ~ S32, 1 / 3Bias
V
COM1 ~ COM3, 1 / 3Bias
µA
Low-power mode
µA
fOSC = 38kHz
3
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