HT1621B stream crystal clear dimensional electronic module designed for Luo Qingyan

HT1621, HT1621B is used to MCU's I / O port expansion peripherals. Display matrix is ??32 × 4, is a 128 dot-matrix LCD driver circuit memory mapped versatility. HT1621, software features HT1621B makes it very suitable for LCD displays, including LCD modules and display subsystems. Interface applications between the host controller and ET6621 requires only 3 or 4 ports. Power down command to reduce power consumption. ? Features Operating voltage: 2.4 ~ 5.2V on-chip RC oscillator external 256kHz or 256kHz 32.768kHz crystal input bias 1/2 or 1/3, 1 / 2,1 / 3 or 1/4??? duty cycle? internal clock frequency? two kinds of buzzer frequency options (2kHz / 4kHz)? Power down command reduces power consumption? internal clock and WDT watchdog circuit? clock and the WDT output? There are eight kinds of Clock / WDT choose? 32 × 4 LCD driver? 32 × 4-bit display RAM? 3 end of the serial interfaces? Internal LCD driving frequency? software setup? data mode and command mode instructions? R / W address auto increment? ? Three data accessing modes VLCD pin is used to adjust the LCD voltage package:? SSOP48, DIP48, SOP32, SOP28, QFP44 Contact: Miss Luo Tel: 0755-36940837 QQ: 2889319275