MSC1210

FEDL1210-03 ¡ Semiconductor FEDL1210-03 This version: May. 2000 MSC1210 Previous version: Jan. 1998 ¡ Semiconductor MSC1210 Clock For 1/2 Duty VFD GENERAL DESCRIPTION The MSC1210 is a clock for use in 1/2 duty VFD applications, featuring 4.194304 MHz crystal controlled oscillator time base, wide ranges of power supply, and 12-hour format. The clock correction rages are minutes, hours, and a 30-min ADJ (30-minute adjustment). The two clock correction modes are available; one is 1Push-1ADJ correction mode, the other is 2 Hz fast advance correction mode. The MSC1210 is also provided with a function of 4-degree-switchable VFD luminance adjustment. FEATURES 12-hour format Wide ranges of power supply: 4 V to 18 V (Built-in constant-voltage circuit) Usable for 1/2 Duty VFD 4.194304 MHz (crystal oscillation) Luminance: Switchable among 4 degrees Package options: 32-pin plastic SSOP (SSOP32-P-430-1.00-K) (Product name: MSC1210GS-K) 30-pin plastic shrink DIP (SDIP30-P-400-1.778) (Product name: MSC1210SS) BLOCK DIAGRAM VDD 64 Hz VDD CONSTANT VOLTAGE CIRCUIT VDD OSCILLATOR FREQUENCY DIVIDER 1a, 3a 1b, 3b OUTPUT DRIVER VCC VCC VSS XT XT TEST CLOCK ADJUSTMENT VDD MINUTE COUNTER HOUR COUNTER SEGMENT DECODER 1/60 1f, 3f 1g, 3g 2a, 2d 2b, 4b, 4c 2c, col 2f 2g 2c, col' A/C VDD ZA HS MS DIM2 DIM1 BLANK LUMINANCE ADJUSTMENT GRID DECODER GR1 GR2 1/11 FEDL1210-03 ¡ Semiconductor MSC1210 PIN CONFIGURATION (TOP VIEW) GR2 VCC VDD 64 Hz TEST BLANK DIM1 DIM2 XT XT VSS A/C...