Pin Assignment

Pin Description

Pad Name

I/O

Description

ROW0~ROW23

O

Line drivers. These pins drive the LEDs.

ROW24/COM15~

ROW31/COM8

O

Drive LED outputs or common outputs. Each COM pin is double bonded.

COM0~COM7

O

Common outputs. Each COM pin is double bonded.

SYNC

I/O

If the RC Master Mode or EXT CLK Master Mode command is programmed, the synchro-

nous signal is output to SYN pin.

If the Slave Mode command is programmed, the synchronous signal is input from SYN pin.

OSC

I/O

If the RC Master Mode command is programmed, the system clock source is from on-chip

RC oscillator and system clock is output to OSC pin.

If the Slave Mode or EXT CLK Master Mode command is programmed, the system clock

source is input from external clock via the OSC pin.

DATA

I/O

Serial data input or output with pull-high resistor

WR

I

WRITE clock input with pull-high resistor Data on the DATA lines are latched into the

HT1632C on the rising edge of the WR signal.

RD

I

READ clock input with pull-high resistor. The HT1632C RAM data is clocked out on the

falling edge of the RD signal. The clocked out data will appear on the DATA line. The host

controller can use the next rising edge to latch the clocked out data.

CS

I

Chip select input with pull-high resistor When the CS line is high, the data and command

read from or written to the HT1632C is disabled, and the serial interface circuit is also re-

set. If CS is low, the data and command transmission between the host controller and the

HT1632C are all enabled.

LED_VDD

¾ Positive power supply for driver circuit. Each LED_VDD pin is double bonded.

LED_VSS

¾ Negative power supply for driver circuit, ground. Each LED_VSS pin is double bonded.

VSS

¾ Negative power supply for logic circuit, ground.

VDD

¾ Positive power supply for logic circuit.

HT1632C

Rev. 1.20

2

June 28, 2011

1

2

3

4

5

6

7

8

9

1 0

1 1

1 2

1 3

1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2

3 4

3 5

3 6

3 7

3 8

3 9

4 8

4 9

5 0

5 1

5 2

2 3 2 4 2 5 2 6

2 7

2 8

2 9

3 0

3 1

3 2

3 3

4 0

4 1

4 2

4 3

4 4

4 5

4 6

4 7

H T 1 6 3 2 C

5 2 Q F P - A

R O W 1 1

R O W 1 0

R O W 9

R O W 8

R O W 7

R O W 6

L E D _ V D D

R O W 5

R O W 4

R O W 3

R O W 2

R O W 1

R O W 0

R O W 2 5 / C O M 1 4

L E D _ V D D

R O W 2 6 / C O M 1 3

L E D _ V S S

R O W 2 7 / C O M 1 2

R O W 2 8 / C O M 1 1

R O W 2 9 / C O M 1 0

R O W 3 0 / C O M 9

R O W 3 1 / C O M 8

C O M 7

C O M 6

C O M 5

C O M 4