SANYO LC75821E Datasheet
Ordering number : EN4532C432
22898HA(OT)/12395TH(KOTO)/N1093(KOTO) No. 4532-1/10
LC75821E, 75821W
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN
LCD Display Drivers
CMOS LSI
Overview
The LC75821E and LC75821W are general-purpose LCD
display drivers that can be used for frequency display in
microprocessor-controlled radio receivers and in other
display applications.
Features
• 53 segment outputs (the maximum for static drive)
• Two drive types: static (1/1) duty (53 segments) and 1/2
duty (104 segments)
• Data input: 3 serial input pins
• INH pin for turning off all display output
• The difference form the LC7582: The LC75821E,
LC75821W are A/D converter, DSP function-removed
versions of the LC7582 of which the functions other
than the two can be used with pin compatibility with
the LC7582 kept.
Package Dimensions
unit: mm
3159-QFP64E
unit: mm
3190-SQFP64
1
16
17
32
33
48
49
64
1.0
14.0
17.2
1.0
1.0
1.6
0.15
0.35
0.1
15.6
0.8
0.8
3.0max
2.7
14.0
17.2
1.0
1.6
0.8
SANYO: QIP64E
[LC75821E]
10.0
12.0
1.25
0.5
1.25
1.25
0.5
1.25
0.18
12.0
10.0
0.5
1.7max
0.5
0.1
0.15
116
17
32
33
48
49
64
SANYO: SQFP64
[LC75821W]
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V
Allowable Operating Ranges at Ta = –40 to +85°C, VSS= 0 V
Electrical Characteristics for the Allowable Operating Ranges
No. 4532-2/10
LC75821E, 75821W
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage
V
DD
max V
DD
–0.3 to +7.0 V
V
LCD
V
LCD
–0.3 to VDD+ 0.3 V
Input voltage
V
IN
1 CE, CLK, DATA, INH –0.3 to +7.0 V
V
IN
2 OSC: output off –0.3 to VDD+ 0.3 V
Output voltage V
OUT
OSC: output off –0.3 to VDD+ 0.3 V
Output current
I
OUT
1 S1 to S53 100 µA
I
OUT
2 COM1, COM2 1.0 mA
Allowable power dissipation Pd max Ta = 85°C 100 mW
Operating temperature Topr –40 to +85 °C
Storage temperature Tstg –55 to +125 °C
Parameter Symbol Conditions min typ max Unit
Supply voltage
V
DD
V
DD
3.0 6.5 V
V
LCD
V
LCD
3.0 V
DD
V
Input high-level voltage V
IH
1 INH 0.7 V
DD
6.5 V
Input high-level voltage V
IH
2 CE, CLK, DATA 0.8 V
DD
6.5 V
Input low-level voltage V
IL
1 INH 0 0.3 V
DD
V
Input low-level voltage V
IL
2 CE, CLK, DATA 0 0.2 V
DD
V
Recommended external
R
OSC
OSC 51 kΩ
resistance
Recommended external
C
OSC
OSC 680 pF
capacitance
Guaranteed oscillation range f
OSC
OSC 25 50 100 kHz
Clock low-level pulse width t
øL
CLK 0.25 µs
Clock high-level pulse width t
øH
CLK 0.25 µs
Data setup time t
sup
CLK, DATA 0.25 µs
Data hold time t
dh
CLK, DATA 0.25 µs
t
1
CE, DATA 1 µs
Serial data pulse width
t
2
CE, CLK 1.25 µs
t
3
1 µs
t
4
4 µs
Parameter Symbol Conditions min typ max Unit
Input high-level current I
IH
CE, CLK, DATA, INH: VI= 6.5 V 5 µA
Input low-level current I
IL
CE, CLK, DATA, INH: VI= 0 V –5 µA
Output high-level voltage V
OH
1 S1 to S53: IO= –10 µA VDD– 1.0 V
Output high-level voltage V
OH
2 COM1, COM2: IO= –100 µA V
LCD
– 0.6 V
Output low-level voltage V
OL
1 S1 to S53: IO= 10 µA 1.0 V
Output low-level voltage V
OL
2 COM1, COM2: IO= 100 µA 0.6 V
Mid-level voltage
V
MID
1 COM1, COM2: V
LCD
= 6.5 V, IO= ±100 µA 2.65 3.25 3.85 V
V
MID
2 COM1, COM2: V
LCD
= 3.0 V, IO= ±100 µA 0.9 1.5 2.1 V
Oscillator frequency f
OSC
OSC: R = 51 kΩ, C = 680 pF 40 50 60 kHz
Hysteresis voltage V
H
CE, CLK, DATA: VDD= 5 V 0.3 V
Current drain
I
DD
0.6 mA
I
LCD
V
LCD
2 mA
Pin Assignment
Block Diagram
Pin Functions
No. 4532-3/10
LC75821E, 75821W
Pin Function
S1 to S53 Segment output pins
COM1, COM2 Common output pins (Only COM1 is used in static (1/1) drive. COM2 must be left open in that mode.)
V
LCD
LCD bias voltage setting
OSC Oscillator connection
CE, CLK, DATA Serial data transfer inputs
V
SS
, V
DD
Power supply
Display off control input
INH
INH = low (VSS) ..........Display off (S1 to S53, COM1, COM2 = low)
INH = high (V
DD
).........Display on
Note that serial data transfers can be performed when display output is forced off.
OPEN Make no connections to this pin.
Loading...