CDP1878C

CMOS Peripherals CDP1878, CDP1878C TNT TAO TAO TAG TACL Rii X-OIMEM TPBiWR TPA CS AO AI A2 VSS 3 4 7 8 9 10 II 12 13 14 TOP 28 VDD 27 DB7 26 DB6 25 DBS 24 DB4 23 DB3 22 OB2 21 OBI 20 DBO 19 TBO 18 TIll 17 TBG 16 TBCL IS mET VIEW 92CS-34626 TERMINAL ASSIGNMENT CMOS Dual Counter-Timer Features: Compatible with general-purpose and CDP1BOO-series microprocessor systems Two 16-bit down-counters and two B-bit control registers 5 modes including a versatile variable-duty cycle mode Programmable gate-level select Two-complemented output pins for each counter-timer Software-controlled interrupt output Addressable in memory space or CDP1BOO-series I/O space The RCA-CDP1878 and CDP1878C8 are dual countertimers consisting of two 16-bit programmable down counters that are independently controlled by separate control registers. The value in the registers determine the mode of operation and control functions. Counters and registers are directly addressable in memory ...