MSM6378A

The MSM6378A is an ADPCM voice synthesis IC with a built-in one-time programmable ROM. The feature of MSM6378A are as follows: (1)4-bit straight ADPCM method; (2)built-in low pass filter; (3)built-in 12-bit DA converter; (4)data write time; (5)oscillation system; (6)oscillation frequency; (7)sampling frequency; (8)activation; (9)voice output; (10)low current comsumption; (11)largest voice time; (12)number of phrases that can be output; (13)power supply voltage.

The absolute maximum ratings of the MSM6378A are: (1)power supply voltage: -0.3 to +7.0V; (2)input voltage: -0.3 to VDD+0.3V; (3)storage temperature: -55 to +125.

The following is about the electrical characteristics of MSM6378A: (1)"H" input voltage: 0.8*VDD min and VDD+0.1V max; (2)"L" input voltage: -0.1V min and 0.2*VDD max; (3)"H" input current1: 20A min and 400A; (4)"H" input current2: 10A max at applies to OSC1 and REP pins; (5)"L" intput current: -10A min; (6)operation current consumption: 7mA typical and 20mA max; (7)standy current consumption: 0.1A typical and 10A max; (8)DA output relative accuracy: 40mV max at no load; (9)DA output impedance: 15k min, 25k typical and 35k max; (10)LPF minimum driving resistance: 50k.