LC5739

No.6704-2/18

(5) LCD driver

Drivable LCD panel

Number of drivable LCD segment output

1/2 bias 1/4 duty

128 segments

1/2 bias 1/3 duty

96 segments

1/2 bias 1/2 duty

64 segments

STATIC

32 segments

(Possible to use output port by mask option.)

- Built-in Step-up / Step-down circuit

(6) Melody/Buzzer

- Melody function

Octave

: 3 octaves

Time of musical note

: specified by program

- Buzzer output

(7) Base timer

- 15-bit base timer for timekeeping

(8) HALT release

- Five vectors

1. 15-bit base timer (500ms overflow output)

2. 15-bit base timer (output every 32ms)

3. S-port

4. P1-port

5. 1/10 second pulse

(9) Stand-by mode

- HALT mode

The program operation will be stopped in this mode. This mode is released by system reset and 5 vectors for HALT

release above-mentioned.

(10) System reset

- RES terminal

- Reset by setting S1 to S4 terminals to “H” level simultaneously.

(11) Oscillation

- 32.768kHz crystal oscillation

- RC oscillation

(12) Power supply

- Ag-battery

: VDD1-VSS=1.30V to 1.65V, Step-up voltage (VDD2-VSS=2.4V to 3.3V)

- Li-battery

: VDD2-VSS=2.60V to 3.60V, Step-down voltage (VDD1-VSS=1.3V to 1.8V)

- External voltage supply : VDD2-VSS=2.00V to 3.60V, Step-down voltage (VDD1-VSS=1.3V to 1.8V)

(13) Shipping form

- Bare chip, QFP64

(14) The development tool

- Evaluation chip

: LC5797

- Emulator

: EVA510 + TB5739 + DCB-1A