6 VOSL O External feedback resistor
7 VINFFC I Focus feedback signal input
8 VCC I 5V power supply
9 PVCC1 I 5V power supply
10 PGND I Ground
11 VOSL- O Main axis drive reverse voltage output
12 VO2+ O Main axis drive forward direction voltage output
13 VOFC- O Focus drive reverse voltage output
14 VOSC+ O Focus drive forward voltage output
15 VOTK+ O Trace drive forward direction voltage output
16 VOTK- O Trace drive reverse voltage output
17 VOLD+ O Feed drive forward direction voltage output
18 VOLD- O Feed drive reverse voltage output
19 PGND I Ground
20 VINFTK I Trace feedback signal input
21 PVCC2 I 5V power supply
22 PREGND I Ground
23 VINLD I Feed control signal input
24 CTK2 I External feedback loop
25 CTK1 I External feedback loop
26 VINTK I Trace control signal input
27 BIAS I 1.4V reference voltage input
28 STBY I Enable control signal
3.5.9 function introduction to PT6961
1. DESCRIPTION
PT6961 (U401) is an LED Controller driven on a 1/7 to 1/8 duty factor. Eleven segment output lines, six
grid output lines, 1 segment/grid output lines, one display memory, control circuit, key scan circuit are all
incorporated into a single chip to build a highly reliable peripheral device for a single chip microcomputer.
Serial data is fed to PT6961 via a four-line serial interface. Housed in a 32-pin SO Package, PT6961 pin
assignments and application circuit are optimized for easy PCB Layout and cost saving advantages.
2. FEATURES
◆ CMOS Technology
◆ Low Power Consumption
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