Rainbow Electronics MAX6963 - Manual (Page 5)

MAX6960–MAX6963
4-Wire Serially Interfaced
8 x 8 Matrix Graphic LED Drivers
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Pin Description
PIN
MQFP TQFN
NAME FUNCTION
1, 6, 11,
12, 44
1, 6, 11,
12, 44
GND Ground
2–5, 7–10 2–5, 7–10 ROW1–ROW8 LE D C athod e D r i ver s. ROW 1 to RO W 8 outp uts si nk cur r ent fr om the d i sp l ay' s cathod e r ow s.
13 13 OSC Multiplex Clock Input. Drive OSC with a 1MHz to 8.5MHz CMOS clock.
14 14 CS
Chip-Select Input. Serial data is loaded into the shift register when CS is low. Data is
loaded into the data latch on CS's rising edge.
15 15 DIN Serial-Data Input. Data from DIN loads into the internal shift register on CLK's rising edge.
16 16 DOUT Serial-Data Output. The output is tri-state.
17 17 CLK Serial-Clock Input. On CLK's rising edge data shifts into the internal shift register.
18 18 RST
Reset Input. Hold RST low until at least 50ms after all interconnected MAX6960s are
powered up.
19, 20,
21,
23–27,
29–33,
35, 36,
37
19, 20,
21,
23–27,
29–33,
35, 36,
37
COL1–COL16
LED Anode Drivers. COL1 to COL16 outputs source current into the display's anode
columns.
22, 28,
34, 38
22, 28,
34, 38
V+
Positive Supply Voltage. Bypass V+ to GND with a single 47µF bulk capacitor per chip
plus a 0.1µF ceramic capacitor per V+.
39 39 ADDOUT
Address-Data Output. Connect ADDOUT to ADDIN of the next MAX6960. Use ADDOUT of
the last MAX6960 as a plane change interrupt output.
40 40 ADDIN
Address-Data Input. For first MAX6960, connect ADDIN to V+. For other MAX6960s,
connect ADDIN to ADDOUT of the preceding MAX6960.
41 41 ADDCLK
Address-Clock Input/Output. Connect ADDCLK of all MAX6960 drivers together, ensuring
that only one MAX6960's ADDIN input is connected to V+.
42 42 RISET0
Digit 0 Current Setting. Connect RISET0 to GND to program all of digit 0's segment
currents to 40mA. Leave RISET0 open circuit to program all of digit 0's segment currents
to 20mA. Connect RISET0 to GND through a fixed or variable resistor to adjust all of digit
0's segment currents between 20mA and 40mA.
43 43 RISET1
Digit 1 Current Setting. Connect RISET1 to GND to program all of digit 1's segment
currents to 40mA. Leave RISET1 open circuit to program all of digit 1's segment currents
to 20mA. Connect RISET1 to GND through a fixed or variable resistor to adjust all of digit
1's segment currents between 20mA and 40mA.
— EP EP Exposed Pad on Package Underside. Connect to GND.