ICM7218 查看數據表（PDF） - Renesas Electronics
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ICM7218 Datasheet PDF : 14 Pages
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ICM7218
Pin Descriptions (Continued)
INPUT
TERMINAL
LOGIC LEVEL
FUNCTION
HEXA/CODE B/ SHUTDOWN
9 (Note 1)
9 (Note 1)
High
Hexadecimal Decoding
Floating
Code B Decoding
Low
Shutdown (Oscillator, Decoder and Display
Disabled)
DA0 - DA2
10, 6, 5
10, 6, 5
Digit Address Inputs
ID0 - ID3
14, 13, 11, 12
14, 13, 11, 12
Display Data Inputs
ID7 (INPUT D.P.)
7
7
Decimal Point Input
DIGIT1 - DIGIT8
15, 16, 23, 20, 17, 4, 25, 3, 1, 26, 2, 27,
22, 21, 18
24
Digit Driver Outputs for COM pin of 7 Segment
SEG a, SEG b,
SEG c, SEG d, SEG e,
SEG f, SEG g, D.P. (Digit Point)
27, 3, 1, 25, 2, 24, 16, 17, 20, 18, 21,
26, 4
22, 23, 15
Segment Driver Outputs for individual LED pins of
7 Segment
VDD
19
19
Power Supply +5V
VSS
28
28
Supply Ground
NOTES:
1. In the ICM7218C and D (random access versions) the HEXA/CODE B/SHUTDOWN input (Pin 9) has internal biasing resistors to hold it at VDD/2 when
Pin 9 is open-circuited. These resistors consume power and result in a quiescent supply current (IQ) of typically 50µA. The ICM7218A and B devices
do not have these biasing resistors and thus are not subject to this condition.
2. ID0-ID3 = Don’t Care when writing control data.
ID4-ID6 = Don’t Care when writing Hex/Code B data.
ID7 = Decimal Point data.
(The display blanks on ICM7218A/B versions when writing in data).
3. In the No Decode format, “Ones” represents “on” segments for all inputs except for the Decimal Point, where “Zero” represents an “on” segment (i.e.,
segments are positive true, decimal point is negative true).
4. Common Anode segment drivers and Common Cathode Digit drivers have 20kΩ pull-up resistors.
FN3159 Rev 4.00
May 17, 2016
Page 4 of 14
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