- 您现在的位置：买卖IC网 > PDF目录11725 > MC33993DWB (Freescale Semiconductor)IC SWITCH I/O INTERFACE 32-SOIC PDF资料下载
参数资料
| 型号： | MC33993DWB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 10/28页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH I/O INTERFACE 32-SOIC |
| 标准包装： | 42 |
| 系列： | * |
| 应用： | * |
| 接口： | * |
| 电源电压： | * |
| 封装/外壳： | 32-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 32-SOIC |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
Analog Integrated Circuit Device Data
18
Freescale Semiconductor
33993
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
ARCHIVE
INFORMATION
ARCHIVE
INFORMATION
The scan timer sets the polling period between input
switch reads in Sleep mode. The period is set in the sleep
command and may be set to 000 (no period) to 111 (64 ms).
In Sleep mode when the scan timer expires, inputs will
behave as programmed prior to sleep command. The 33993
will wake up for approximately 125
μs and read the switch
inputs. At the end of the 125
μs, the input switch states are
compared with the switch state prior to sleep command.
When switch state changes are detected, an interrupt (when
enabled; refer to wake-up/interrupt command description on
page 13) is generated and the device enters Normal mode.
Without switch state changes, the 33993 will reset the scan
timer, inputs become tri-state, and the Sleep mode continues
until the scan timer expires again.
Table 19 shows the programmable settings of the Scan
timer.
Note The interrupt and scan timers are disabled in the
Normal mode.
Figure 5, page 8, is a graphical description of how the
33993 device exits Sleep mode and enters Normal mode.
Notice that the device will exit Sleep mode when the interrupt
timer expires or when a switch change of state occurs. The
falling edge of INT triggers the MCU to wake from Sleep
state. Figure 11 illustrates the current consumed during
Sleep mode. During the 125
μs, the device is fully active and
switch states are read. The quiescent current is calculated by
integrating the normal running current over scan period plus
approximately 60
μA.
Figure 11. Sleep Current Waveform
TEMPERATURE MONITOR
With multiple switch inputs closed and the device
programmed with the wetting current timers disabled,
considerable power will be dissipated by the IC. For this
reason temperature monitoring has been implemented. The
temperature monitor is active in the Normal mode only. When
the IC temperature is above the thermal limit, the temperature
monitor will do all of the following:
Table 17. Sleep Command
Sleep Command
Command Bits
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
0
X
int
timer
int
timer
int
timer
scan
timer
scan
timer
scan
timer
Table 18. Interrupt Timer
Bits 543
Interrupt Period
000
32 ms
001
64 ms
010
128 ms
011
256 ms
100
512 ms
101
1.024 s
110
2.048 s
111
4.096 s
Table 19. Scan Timer
Bits 210
Scan Period
000
No Scan
001
1.0 ms
010
2.0 ms
011
4.0 ms
100
8.0 ms
101
16 ms
110
32 ms
111
64 ms
Table 19. Scan Timer
Bits 210
Scan Period
Inputs active for 125 us
out of 32 ms
I=V/R or 0.270V/100ohm = 2.7mA
I=V/R or 6mV/100ohm = 60 uA
Inputs active for 125 us
out of 32 ms
I=V/R or 0.270V/100ohm = 2.7mA
I=V/R or 6mV/100ohm = 60 uA
Inputs active for 125 us
out of 32 ms
I=V/R or 0.270V/100ohm = 2.7mA
I=V/R or 6mV/100ohm = 60 uA
I=V/R or 0.270 V/100
Ω=2.7 mA
Inputs active for
125
μs out of 32 ms
I=V/R or
6.0 mV/100
Ω=60 μA
相关PDF资料 |
PDF描述 |
|---|---|
| 31-203-RFX | PANEL JACK - SOLDER - 50 OHM |
| MC33884DW | IC SWITCH SDI MONITOR 24-SOIC |
| D38999/26MB99PA | CONN PLUG 7POS STRAIGHT W/PINS |
| MC33399D | IC LIN INTERFACE W/WAKE 8-SOIC |
| ATTINY88-AU | MCU AVR 8K ISP FLASH 1.8V 32TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33993DWBR2 | 功能描述:接口 - 专用 MSDI RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MC33996EK | 功能描述:电源开关 IC - 配电 16LOW SIDE SW 1.2OHM RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MC33996EKR2 | 功能描述:电源开关 IC - 配电 16LOW SIDE SW 1.2OHM RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MC33997DW | 功能描述:IC SWITCH 3.3/5V SUPPLY 24-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| MC33997DWR2 | 制造商:Rochester Electronics LLC 功能描述:MLPS 3.3 IC - Bulk |
发布紧急采购，3分钟左右您将得到回复。