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參數(shù)資料
| 型號： | MCZ33996EK |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | 16-Output Switch with SPI Control |
| 中文描述： | 16輸出帶有SPI控制開關(guān) |
| 文件頁數(shù)： | 13/23頁 |
| 文件大?。?/td> | 306K |
| 代理商： | MCZ33996EK |
Analog Integrated Circuit Device Data
Freescale Semiconductor
13
33996
LOGIC COMMANDS AND REGISTERS
INTRODUCTION
LOGIC COMMANDS AND REGISTERS
INTRODUCTION
The 33996 provides flexible control of 16 low-side driver
outputs. The device allows PWM and ON /OFF control
through the use of several 24-bit input command words. This
section describes the logic operation and command registers
of the 33996.
The 33996 message set consists of seven messages as
shown in
Table 6
. Bits 23 through18 determine the specific
command and bits 15 through 0 determine how a specific
output will operate. The 33996 operates on the command
word on the rising edge of
CS
.
Note
Upon Power-ON Reset all bits are defined as shown
in
Table 6
.
ON/OFF CONTROL REGISTER
To program the 16 outputs of the 33996 ON or OFF, a
24-bit serial stream of data is entered into the SI pin. The first
8 bits of the control word are used to identify the on/off
command and the remaining 16 bits are used to turn ON or
OFF the specific output driver.
OPEN LOAD CURRENT ENABLE CONTROL
REGISTER
The Open Load Current Enable Control register is
provided to enable or disable the 50
μ
A open load detect pull-
down current. This feature allows the device to be used in
LED applications. Power-ON Reset (POR) or the
RST
pin or
the RESET command disables the 50
μ
A pull-down current.
No open load fault will be reported with the pull-down current
disabled. For open load to be active, the user must program
the Open Load Current Enable Control register with logic [1].
GLOBAL SHUTDOWN/RETRY CONTROL
REGISTER
The Global Shutdown/Retry Control register allows the
user to select the global fault strategy for the outputs. The
over-voltage control bit (bit 16) sets the operation of the
outputs when returning from over-voltage. Setting the over-
voltage bit to logic [0] will force all outputs to remain off when
V
PWR
returns to normal level. Setting the over-voltage bit to
logic [1] will command outputs to resume their previous state
when V
PWR
returns to normal level. Bit 17 is the global
thermal bit. When bit 17 is set to logic [0], all outputs will shut
down when thermal limit is reached and remain off even after
cooled. With bit 17 set to logic [1], all outputs will shut down
when thermal limit is reached and will retry when cooled.
SHORT FAULT PROTECT DISABLE (SFPD)
CONTROL REGISTER
All outputs contain current limit and thermal shutdown with
programmable retry. The SFPD control bits are used for fast
shutdown of the output when overcurrent condition is
detected but thermal shutdown has not been achieved.
The SFPD Control register allows the user to select
specific outputs for incandescent lamp loads and specific
outputs for inductive loads. By programming the specific
SFPD bit as logic [1], output will rely on over temperature
shutdown only. Programming the specific SFPD bit as
logic [0] will shut down the output after 100
μ
s to 450
μ
s
during turn on into short circuit. The decision for shutdown is
Table 6. SPI Control Commands
MSB
Bits
LSB
Commands
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ON/OFF Control
0 = off, 1 = on
0
0
0
0
0
0
X
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Open Load Current Enable
0 = disable, 1 = enable
0
0
0
0
0
1
X
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Global Shutdown/Retry
Control
0 = shutdown, 1 = retry
0
0
0
0
1
0
Thermal
Bit 0
Over-
voltage
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SFPD Control
1 = therm only, 0 = V
DS
0
0
0
0
1
1
X
X
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
PWM Enable
0 = SPI only, 1 = PWM
0
0
0
1
0
0
X
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
AND/OR Control
0 = PWM pin AND
with SPI
1 = PWM pin OR
with SPI
0
0
0
1
0
1
X
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reset
0
0
0
1
1
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SO Response
0 = No Fault, 1 = Fault
Any
Fault
over-
volt-
age
0
0
0
0
0
0
OUT
15
OUT
14
OUT
13
OUT
12
OUT
11
OUT
10
OUT
9
OUT
8
OUT
7
OUT
6
OUT
5
OUT
4
OUT
3
OUT
2
OUT
1
OUT
0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCZ33996EK | 制造商:Freescale Semiconductor 功能描述:IC LOAD SWITCH 27V 32SOIC |
| MCZ33996EKR2 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 16 LOW SIDE SW 1.20HM RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MCZ33998EG | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 2.6/5.0V SWITCHING POWER RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MCZ33998EG/R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Switching Power Supply with Linear Regulators |
| MCZ33998EGR2 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 2.6/5.0V SWITCHING POWER RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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