MIC50398 Datasheet, PDF (5/6 Pages) Micrel Semiconductor – Six Decade Counter / Display Decoder

MIC50398/50399
Timing
COUNT
UP/DOWN
COUNT INHIBIT
STORE
CLEAR
COUNT
ZERO
CARRY
SCAN
LOAD COUNTER
t _UDS
t _PCW
t _CS
t _SS
t _SPW
t _OA
t _OH
t _CA
t _CH
t_L
t _UDS
t _CIS
t _CIS
Micrel
Loading Counter, Register (1 Digit)
LOAD COUNTER
BCD DATA INPUT
t _LS
t _DV
DIGIT OUTPUT 6
DIGIT OUTPUT 5 ETC
COUNT INPUT, CARRY
ZERO OUTPUT INHIBITED
DURING THIS TIME
COUNT INPUT
ZERO OUTPUT
CARRY OUTPUT
t _OA
t _CA
t _OH
t _CH
t_LS 2.0 µs min NOTE: REF. TO POSITIVE
TRANSITION OF DIGIT OUTPUT
t_DV 2.0 µS min NOTE: REF. TO NEGATIVE
EDGE OF DIGIT OUTPUT
NOTE:
The inhibit function of the zero or carry outputs does
not end when the Load Counter input goes to a “0”
unless that transition occurs during interdigit
blanking period at least 2.0 µs prior to a positive
transition of a digit output.
8-14
August 1998