BU97930MUV Datasheet, PDF (1/24 Pages) Rohm – Multifunction Segment Drivers

LCD Segment Driver series
Multifunction
Segment Drivers
BU97930MUV,BU97931FV,BU9798KV,BU9798GUW,BU97500KV
No.10044EAT04
●Description
New released Multi-function type segment drivers support GPO function, LED driving function, static-driving mode, and
Blink function that can blink each segment individually.
ROHM Multi-function segment driver series contribute to reduction in cost of system and easy software development.
●Features (BU97930MUV, BU97931FV, BU9798KV/GUW)
1) LCD drive output
Common output : 4, Segment output : 27 (BU97930MUV)
Common output : 4, Segment output : 28 (BU97931FV)
Common output : 4, Segment output : 49 (BU9798KV/GUW)
2) Integrated Display data RAM (DDRAM)
RAM: 28*4 =112 bit (BU97930MUV, BU97931FV)
RAM: 49*4 =196 bit (BU9798KV/GUW)
3) 3-wire Serial interface (SD, SCL, CSB)
4) Integrated Oscillator circuit
5) Integrated LCD Voltage generator circuit
Support: 1/3 Bias, 1/3 or 1/4 Duty
Support: 1/1 Bias, 1/1Duty (Static Driving)
Integrated buffer amp
Integrated regulator for LCD drive: 3.2, 3.3, 3.4, 4.4, 4.5, 4.6, 5.0V selectable (BU9798KV/GUW)
6) Support Split Supply for Logic (VDD) and LCD (VLCD)
7) Integrated LED driver circuit
8) Segment terminals operation, segment output mode/GPO output mode selectable
9) Segment terminals operation, segment output mode/LED output mode selectable (BU9798KV/GUW)
10) Support PWM source select, external clock or internal clock
Resolution 8bit mode/12bit mode selectable (BU9798KV/GUW)
Resolution 8bit mode (BU97930MUV, BU97931FV)
11) Low power consumption design
12) Support standby mode
13) Integrated Power-On-Reset circuit (POR).
14) No external component
15) Support Independent blink function
Blink frequency 1.6, 2.0, 2.6, 4.0Hz selectable
16) Operating power supply : 1.8 ~ 3.6V
17) LCD drive power supply : 2.7 ~ 5.5V (BU97930MUV, BU97931FV)
: 3.3 ~ 5.5V (BU9798KV/GUW)
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