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參數(shù)資料
| 型號： | PCA9552 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | GT 10C 10#16 SKT RECP BOX RM |
| 中文描述： | 16位I2C LED與可編程閃爍率司機(jī) |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 166K |
| 代理商： | PCA9552 |
Philips Semiconductors
Product data sheet
PCA9552
16-bit I
2
C LED driver with programmable blink rates
2004 Oct 01
5
DEVICE ADDRESSING
Following a START condition the bus master must output the
address of the slave it is accessing. The address of the PCA9552 is
shown in Figure 4. To conserve power, no internal pull-up resistors
are incorporated on the hardware selectable address pins and they
must be pulled HIGH or LOW.
1
1
0
0
A2
A1
A0
SLAVE ADDRESS
su01420
FIXED
HARDWARE SELECTABLE
R/W
Figure 4. Slave address
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.
CONTROL REGISTER
Following the successful acknowledgement of the slave address,
the bus master will send a byte to the PCA9552 which will be stored
in the Control Register. This register can be read and written via the
I
2
C-bus.
0
0
AI
B2
B1 B0
0
SW00898
B3
AUTO-INCREMENT FLAG
REGISTER ADDRESS
RESET STATE: 00h
Figure 5. Control register
The lowest 3 bits are used as a pointer to determine which register
will be accessed.
If the auto-increment flag (AI) is set, the four low order bits of the
Control Register are automatically incremented after a read or write.
This allows the user to program the registers sequentially. The
contents of these bits will rollover to ‘0000’ after the last register is
accessed.
When auto-increment flag is set (AI = 1) and a read sequence is
initiated, the sequence must start by reading a register different from
‘0’ (B3 B2 B1 B0
0 0 0 0).
Only the 4 least significant bits are affected by the AI flag.
Unused bits must be programmed with zeroes.
Control Register definition
B3
B2
B1
B0
REGISTER
NAME
TYPE
REGISTER
FUNCTION
0
0
0
0
INPUT0
READ
INPUT
REGISTER 0
0
0
0
1
INPUT1
READ
INPUT
REGISTER 1
0
0
1
0
PSC0
READ/
WRITE
FREQUENCY
PRESCALER 0
0
0
1
1
PWM0
READ/
WRITE
PWM
REGISTER 0
0
1
0
0
PSC1
READ/
WRITE
FREQUENCY
PRESCALER 1
0
1
0
1
PWM1
READ/
WRITE
PWM
REGISTER 1
0
1
1
0
LS0
READ/
WRITE
LED 0–3
SELECTOR
0
1
1
1
LS1
READ/
WRITE
LED 4–7
SELECTOR
1
0
0
0
LS2
READ/
WRITE
LED 8–11
SELECTOR
1
0
0
1
LS3
READ/
WRITE
LED 12–15
SELECTOR
REGISTER DESCRIPTION
INPUT0 — INPUT REGISTER 0
LED
7
bit
7
default
X
LED
6
6
X
LED
5
5
X
LED
4
4
X
LED
3
3
X
LED
2
2
X
LED
1
1
X
LED
0
0
X
The INPUT register 0 reflects the state of the device pins (inputs 0
to 7). Writes to this register will be acknowledged but will have no
effect.
NOTE:
The default value “X” is determined by the externally applied
logic level, normally ‘1’ when used for directly driving LED with
pull-up to V
DD
.
INPUT1 — INPUT REGISTER 1
LED
15
14
13
bit
7
6
5
default
X
X
X
The INPUT register 1 reflects the state of the device pins (inputs 8
to 15). Writes to this register will be acknowledged but will have no
effect.
LED
LED
LED
12
4
X
LED
11
3
X
LED
10
2
X
LED
9
1
X
LED
8
0
X
NOTE:
The default value “X” is determined by the externally applied
logic level, normally ‘1’ when used for directly driving LED with
pull-up to V
DD
.
PSC0 — FREQUENCY PRESCALER 0
bit
7
6
5
default
1
1
1
PSC0 is used to program the period of the PWM output.
4
1
3
1
2
1
1
1
0
1
The period of BLINK0
(PSC0
1)
44
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9554 | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9554A | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9554AN | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9554N | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9559PWDH | 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9552_06 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:16-bit I2C-bus LED driver with programmable blink rates |
| PCA9552BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:16-bit I2C-bus LED driver with programmable blink rates |
| PCA9552BS,118 | 功能描述:LED照明驅(qū)動(dòng)器 16-BIT I2C FM OD LED BLK RST RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9552D | 功能描述:LED照明驅(qū)動(dòng)器 I2C LED BLINKR 16BIT RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9552D,112 | 功能描述:LED照明驅(qū)動(dòng)器 I2C LED BLINKR 16BIT RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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