SLS SL70D0948 Datasheet
SLS System Logic Semiconductor SL70D0948
48 OUTPUT LED DRIVER / 9 BIT PWM CONTROLLER
SL70D0948
System Logic Semiconductor
SLS System Logic Semiconductor SL70D0948
CONTENTS
INTRODUCTION
BLOCK DIAGRAM
PIN ASSIGNMENT
PIN DESCRIPTION
FUNCTION DESCRIPTION
SPECIFICAIONS
REFERENCE APPLICATIONS
SLS System Logic Semiconductor SL70D0948
INTRODUCTION
The SL70D0948 is LED driver / controller IC for LED display panel. This is consisted of 48 channel
LED driver , 9Bit PWM controller and 48 bit shift register. Also it is very convenient to application
because all display data can transfer by serial method.
FEATURES
Driver Output Circuits
- 48 LED Driver Outputs : N-ch Open Drain MOS Transistor Output
- LED Driving Voltage : Max. 16V (When Transistor Off)
- LED Driving Current : Max. 90mA
- LED Driving Current Control
- Outputs are 9bit PWM controlled
Data Interface
- 48bit Shift Register for 9bit data input
- 9bit parallel data format selectable
PWM controller
- 9bit PWM control ( 512 Gray scale )
- 3bit Brightness / 4bit Brightness input selectable
Package Type
- 100 pin MQFP
SLS System Logic Semiconductor SL70D0948
BLOCK DIAGRAM
OE
PWCLK
BRMODE
BRD2
BRD1
BRD0
Control
Driver Output
9 bit PWM Counter
9 9 9 9 9 9
LED1
LED2
LED3
LED Driver (1)
LED Driver (2)
LED Driver (3)
PWM Generator (1)
PWM Generator (2)
PWM Generator (3)
LED47
LED46
LED Driver (46)
PWM Generator (46)
LED48
LED Driver (47)
LED Driver (48)
PWM Generator (47)
PWM Generator (48)
STROBE
CE2
/CE1
/RESET
DIN8
DIN0
9bit Data Register (1)
9bit Data Register (2)
9bit Data Register (3)
9
9 9 9 9 9
48bit x9bit Shift RegisterDIN 9bit DOUT 9bit
SHCLK
9bit Data Register (46)
9bit Data Register (47)
9bit Data Register (48)
DOUT8
DOUT0
SLS System Logic Semiconductor SL70D0948
PIN ASSIGNMENT(MQFP)
5180
VDD
81
100
STROBE
SHCLK
/RESET
GND
LED31
LED32
LED33
LED34
LED35
LED36
GND
LED37
LED38
LED39
LED40
LED41
LED42
GND
VDD
DIN8
/CE1
CE2
OEB
GND
PWCLK
BRMODE
GND
LED30
LED29
LED28
LED27
LED26
LED25
GND
LED24
LED23
LED22
SL70D0948
System Logic
Semiconductor
LED21
LED20
LED19
GND
BRD0
BRD1
BRD2
GND
VDD
VDD
VDD
GND
NC
VDD
GND
LED18
LED17
LED16
LED15
LED14
LED13
GND
LED12
LED11
LED10
LED9
LED8
LED7
GND
GND
DOUT8
DOUT7
50
31
DIN7
DIN6
DIN5
DIN4
DIN3
DIN2
DIN1
DIN0
GND
LED43
LED44
LED45
LED46
1
LED47
LED48
GND
LED1
LED2
LED3
LED4
LED5
LED6
GND
DOUT0
DOUT1
DOUT2
DOUT3
DOUT4
DOUT5
DOUT6
30
SLS System Logic Semiconductor SL70D0948
PIN DESCRIPTION
PIN No.
(MQFP)
49,52,53,54,78,99
9, 16, 23, 33,
34, 41, 48,
59, 65, 72,74
84, 91, 98
83
100, 1, 2,
3, 4, 5,
6, 7, 8
32, 31, 30,
29, 28, 27,
26, 25, 24
82
81
PIN NAME FUNCTION
VDD 5 V Power supply terminal.
GND terminals for LED Drivers and control logic.
GND
/RESET Reset input terminal (Low active).
DIN8 ~ DIN0
DOUT8 ~ DOUT0
SHCLK Shift register clock input terminal.
STROBE
All GND terminals must be connected to GND level.
Do not left any GND terminal to NC.
Data input terminals for 9bit R, G, B data.
Shift register accepts R, G, B data from these terminals.
(at rising edge of SHCLK)
Output terminals of shift register output data for next
DIN8 ~ DIN0 terminals.
Strobe signal input terminal. At rising edge of strobe signal,
48 channels of 9 bit data registers copy R, G, B data from
shift register.
80
79
76
77
75
56, 57, 58
/CE1 Chip enable signal input terminal (Low active).
Chip enable signal input terminal (High active).
CE2
OEB
PWCLK PWM generator reference clock input terminal.
BRMODE Brightness control mode input terminal.
BRD2 ~ BRD0 Brightness control data input terminal.
The device accepts SHCLK and STROBE when /CE1 = “L ”
and CE2 = “H ”.
Output enable signal input terminal.
The device outputs data when OEB = “L ”. When OEB = “H ”
all R, G, B output terminals hold high-impedance state.
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