ICM7217_01 Datasheet, PDF (4/20 Pages) Intersil Corporation – 4-Digit LED Display, Programmable Up/Down Counter

ICM7217
Electrical Specifications V_DD = 5V, V_SS = 0V, T_A = 25^oC, Display Diode Drop 1 .7V, Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
Display Scan
Free-running (SCAN Terminal Open Circuit)
-
Oscillator Frequency, f_DS
Switching Specifications V_DD = 5V, V_SS = 0V, T_A = 25^oC
2.5
10
UNIT
kHz
PARAMETER
MIN
TYP
MAX
UNIT
UP/DOWN Setup Time, t_UCS
300
-
-
ns
UP/DOWN Hold Time, t_UCH
1500
750
-
ns
COUNT Pulse Width High, t_CWH
250
100
-
ns
COUNT Pulse Width Low, t_CWI
250
100
-
ns
COUNT to CARRY/BORROW Delay, t_CB
-
750
-
ns
CARRY/BORROW Pulse Width t_BW
-
100
-
ns
COUNT to EQUAL Delay, t_CE
-
500
-
ns
COUNT to ZERO Delay, t_CZ
-
300
-
ns
RESET Pulse Width, t_RST
1000
500
-
ns
NOTES:
1. In the ICM7217 the UP/DOWN, STORE, RESET and the BCD I/O as inputs have pullup or pulldown devices which consume power when
connected to the opposite supply. Under these conditions, with the display off, the device will consume typically 750µA.
2. These voltages are adjusted to allow the use of thumbwheel switches for the ICM7217. Note that a high level is taken as an input logic
zero for ICM7217 common-cathode versions.
3. Parameters not tested (Guaranteed by Design).
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