PCA9633DP1,118 Datasheet PCA9633TK,118, PCA9633DP1,118, PCA9633DP2,118 | P7-P9

Product data sheet Rev. 05 — 25 July 2008 7 of 43

NXP Semiconductors

PCA9633

4-bit Fm+ I

C-bus LED driver

[1] HVQFN16 package die supply ground is connected to both the V

pin and the exposed center pad. The

pin must be connected to supply ground for proper device operation. For enhanced thermal, electrical,

and board-level performance, the exposed pad needs to be soldered to the board using a corresponding

thermal pad on the board, and for proper heat conduction through the board thermal vias need to be

incorporated in the PCB in the thermal pad region.

Table 4. Pin description for SO16 and TSSOP16

Symbol Pin Type Description

A0 1 I address input 0

A1 2 I address input 1

LED0 3 O LED driver 0

LED1 4 O LED driver 1

LED2 5 O LED driver 2

LED3 6 O LED driver 3

A2 7 I address input 2

A3 8 I address input 3

9 power supply supply ground

OE 10 I active LOW Output Enable

A4 11 I address input 4

SCL 12 I serial clock line

SDA 13 I/O serial data line

A5 14 I address input 5

A6 15 I address input 6

16 power supply supply voltage

Table 5. Pin description for HVQFN16

Symbol Pin Type Description

LED0 1 O LED driver 0

LED1 2 O LED driver 1

LED2 3 O LED driver 2

LED3 4 O LED driver 3

A2 5 I address input 2

A3 6 I address input 3

[1]

7 power supply supply ground

OE 8 I active LOW Output Enable

A4 9 I address input 4

SCL 10 I serial clock line

SDA 11 I/O serial data line

A5 12 I address input 5

A6 13 I address input 6

14 power supply supply voltage

A0 15 I address input 0

A1 16 I address input 1

Product data sheet Rev. 05 — 25 July 2008 8 of 43

NXP Semiconductors

PCA9633

4-bit Fm+ I

C-bus LED driver

7. Functional description

Refer to Figure 1 “Block diagram of PCA9633”.

7.1 Device addresses

Following a START condition, the bus master must output the address of the slave it is

accessing.

There are a maximum of 128 possible programmable addresses using the 7 hardware

address pins. Two of these addresses, Software Reset and LED All Call, cannot be used

because their default power-up state is ON, leaving a maximum of 126 addresses. Using

other reserved addresses, as well as any other subcall address, will reduce the total

number of possible addresses even further.

7.1.1 Regular I

C-bus slave address

The I

C-bus slave address of the PCA9633 is shown in Figure 8. To conserve power, no

internal pull-up resistors are incorporated on the hardware selectable address pins and

they must be pulled HIGH or LOW (10-pin and 16-pin versions).

Remark: Using reserved I

C-bus addresses will interfere with other devices, but only if the

devices are on the bus and/or the bus will be open to other I

C-bus systems at some later

date. In a closed system where the designer controls the address assignment these

addresses can be used since the PCA9633 treats them like any other address. The

LED All Call, Software Reset and PCA9564 or PCA9665 slave address (if on the bus) can

never be used for individual device addresses.

• PCA9633 LED All Call address (1110 000) and Software Reset (0000 0110) which

are active on start-up

• PCA9564 (0000 000) or PCA9665 (1110 000) slave address which is active on

start-up

• ‘reserved for future use’ I

C-bus addresses (0000 011, 1111 1XX)

• slave devices that use the 10-bit addressing scheme (1111 0XX)

• slave devices that are designed to respond to the General Call address (0000 000)

• High-speed mode (Hs-mode) master code (0000 1XX).

The last bit of the address byte deﬁnes the operation to be performed. When set to logic 1

a read is selected, while a logic 0 selects a write operation.

a. 8-pin version b. 10-pin version c. 16-pin version

Fig 8. Slave address

R/W

002aab318

1 1 0 0 0 1 0

fixed

slave address

R/W

002aab295

1 1 0 0 0 A1 A0

fixed hardware

selectable

slave address

R/W

002aab319

A6 A5 A4 A3 A2 A1 A0

hardware selectable

slave address

Product data sheet Rev. 05 — 25 July 2008 9 of 43

NXP Semiconductors

PCA9633

4-bit Fm+ I

C-bus LED driver

7.1.2 LED All Call I

C-bus address

• Default power-up value (ALLCALLADR register): E0h or 1110 000X

• Programmable through I

C-bus (volatile programming)

• At power-up, LED All Call I

C-bus address is enabled. PCA9633 sends an ACK when

E0h (R/W = 0) or E1h (R/W = 1) is sent by the master.

See Section 7.3.8 “LED All Call I

C-bus address, ALLCALLADR” for more detail.

Remark: The default LED All Call I

C-bus address (E0h or 1110 000X) must not be used

as a regular I

C-bus slave address since this address is enabled at power-up. All the

PCA9633s on the I

C-bus will acknowledge the address if sent by the I

C-bus master.

7.1.3 LED Sub Call I

C-bus addresses

• 3 different I

C-bus addresses can be used

• Default power-up values:

– SUBADR1 register: E2h or 1110 001X

– SUBADR2 register: E4h or 1110 010X

– SUBADR3 register: E8h or 1110 100X

• Programmable through I

C-bus (volatile programming)

• At power-up, Sub Call I

C-bus addresses are disabled. PCA9633 does not send an

ACK when E2h (R/W = 0) or E3h (R/W = 1), E4h (R/W = 0) or E5h (R/W = 1), or

E8h (R/W = 0) or E9h (R/W = 1) is sent by the master.

See Section 7.3.7 “I

C-bus subaddress 1 to 3, SUBADRx” for more detail.

Remark: The default LED Sub Call I

C-bus addresses may be used as regular I

C-bus

slave addresses as long as they are disabled.

7.1.4 Software Reset I

C-bus address

The address shown in Figure 9 is used when a reset of the PCA9633 needs to be

performed by the master. The Software Reset address (SWRST Call) must be used with

R/W = 0. If R/W = 1, the PCA9633 does not acknowledge the SWRST. See Section 7.6

“Software Reset” for more detail.

Remark: The Software Reset I

C-bus address is a reserved address and cannot be used

as a regular I

C-bus slave address (16-pin version) or as an LED All Call or LED Sub Call

address.

Fig 9. Software Reset address

002aab416

0 0 0 0 0 1 1

R/W

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33 P34-P36 P37-P39 P40-P42 P43-P43

PCA9633DP1,118

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NXP Semiconductors

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LED Lighting Drivers LED DRVR 4BIT I2C

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PCA9633DP1,118

PCA9633DP1,118

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