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Detail of camera motion section

Details of power supply circuit 2 / SD card section


LENS control MCU

Package VFBGA142 VBGA162
Package size [mm] 7 x 7 0.5 pitch
CPU Arm® Cortex®-M3,Max operation f 40 MHz Arm® Cortex®-M3,Max operation f 50 MHz

Flash ROM256KB


Flash ROM512 KB / 1 MB

SRAM 48 KB+32 KB / 64 KB+32 KB

Features 7bit resolution micro step function, PSC(342: 1 unit, 343: 4 unit), 2-phase pulse counter (342: 2 ch, 343: 3 ch), H-SW driver(342: 7.5 ch, 343: 8 ch), μstep unit(342: 2 unit, 343: 3 unit)

PWM chopper type dual stepping motor driver

Part number


TC78S122FNG / TC78S122FTG

Package HTSSOP48 / QFN48
Package size [mm] 12.5 x 8.1 x 1.2
Maximun ratings 40 V / 2.0 A
Low on resistor output (sum of 2 Tr) 0.6 Ω

-Over limit current detection, over heat detection and power on reset

-2 line up supports clock input for stepping motor control and phase input

-Single power supply without 5 V input

Dual H-bridge driver IC

Part number TC78H653FTG
Package QFN16
Package size [mm] 3.0 x 3.0 x 0.9
Maximun ratings 8 V / 4.0 A
Low on resistor output (sum of 2 Tr) 0.22 Ω

•Thorough current preventing function

•Over current detection, over heat detection and low voltage detection


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