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参数资料
| 型号： | MAX1604 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual-Channel CardBus and PCMCIA Power Switches with SMBus⑩ Serial Interface |
| 中文描述： | 双通道CardBus和PCMCIA电源开关，带有SMBus串行接口 |
| 文件页数： | 15/16页 |
| 文件大小： | 190K |
| 代理商： | MAX1604 |
M
Dual-Channel CardBus and PCMCIA
Power S witc hes with S MBus S erial Interfac e
______________________________________________________________________________________
15
SMBCLK
A = START CONDITION
B = MSB OF ADDRESS CLOCKED INTOSLAVE
C = LSB OF ADDRESS CLOCKED INTOSLAVE
D = R/W BIT CLOCKED INTOSLAVE
A
B
C
D
E
F
G
H
I
J
SMBDATA
t
SU:STA
t
HD:STA
t
LOW
t
HIGH
t
SU:DAT
t
SU:STO
t
BUF
K
E = SLAVE PULLS SMBDATA LINE LOW
F = ACKNOWLEDGE BIT CLOCKED INTOMASTER
G = MSB OF DATA CLOCKED INTOMASTER
H = LSB OF DATA CLOCKED INTOMASTER
I = ACKNOWLEDGE CLOCK PULSE
J = STOP CONDITION
K = NEW START CONDITION
Figure 4. SMBus Read Timing Diagram
The interrupt pointer address provides quick fault iden-
tification for simple slave devices that lack the complex,
expensive logic needed to be a bus master. The host
can read the interrupt pointer to determine which slave
device generated an
SMBALERT
interrupt signal. The
interrupt pointer address can activate several different
slave devices simultaneously, similar to an I
2
C general
call. Any slave device that generated an interrupt
attempts to identify itself by putting its own address on
the bus during the first read byte. If more than one slave
attempts to respond, bus arbitration rules apply and the
device with the lower address code wins. The losing
device won’t generate an acknowledge and will contin-
ue to hold the
SMBALERT
line low until serviced, which
implies that the host interrupt input must be level
sensitive.
__________Applic ations Information
S upply Bypassing
Bypass the VY, VX, and 12IN_ inputs with ceramic 0.1μF
capacitors. Bypass the VCC_ and VPP_ outputs with a
0.1μF capacitor for noise reduction and ESD protection.
Power-Up
Apply power to the VL input before any of the switch
inputs. If VX, VY, or 12IN receive power before VL rises
above 2.8V, the supply current may be artificially high
(about 5mA). When the voltage on VL is greater than
2.8V (operating mode), the part consumes its specified
24μA. To avoid power sequencing, diode-OR VX and
VY to VL through a 1k
resistor (Figure 5). Take care
not to allow VL to drop below the 2.8V maximum under-
voltage lockout threshold.
Changing S MBCLK and S MBDAT A
S imultaneously
When clocking data into the MAX1601/MAX1604, SMB-
DATA must not fall before SMBCLK. Otherwise, the
MAX1601/MAX1604 may interpret this as a start condi-
tion. Even when SMBDATA and SMBCLK fall at the
same instant, different fall times for the two signals may
cause the erroneous generation of a start condition. To
ensure that SMBDATA transitions after the falling edge of
SMBCLK, add an RC network to SBMDATA (Figure 6).
MAX1601
MAX1604
VL
VX
+5V
0.1
μ
F
1k
VY
Figure 5. Powering from Either VX or VY
+5V
10k
PULL-UP
1.5k
CIRRUS LOGIC
CL-PD6730
SMBDATA
SMBDATA
SMBCLK
SMBCLK
100pF
MAX1601
MAX1604
Figure 6. Application with Cirrus Logic Interface
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16040LLA23+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.32V 8PIN UDFN - Rail/Tube |
| MAX16040LLA23+T | 功能描述:监控电路 Battery Backup 2.5V-Ep RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16040LLA26+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.63V 8PIN UDFN - Rail/Tube |
| MAX16040LLA26+T | 功能描述:监控电路 Battery Backup 2.63V RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16040LLA29+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.93V 8PIN UDFN - Rail/Tube |
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