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參數(shù)資料
| 型號： | ISPPAC-POWR1014 |
| 廠商： | Lattice Semiconductor Corporation |
| 英文描述： | In-System Programmable Power Supply Supervisor, Reset Generator and Sequencing Controller |
| 中文描述： | 在系統(tǒng)可編程電源監(jiān)控器，復(fù)位發(fā)生器和排序控制器 |
| 文件頁數(shù)： | 18/45頁 |
| 文件大小： | 999K |
| 代理商： | ISPPAC-POWR1014 |
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Lattice Semiconductor
ispPAC-POWR1014/A Data Sheet
18
VMON Voltage Measurement with the On-chip Analog to Digital Converter (ADC, ispPAC-
POWR1014A Only)
The ispPAC-POWR1014A has an on-chip analog to digital converter that can be used for measuring the voltages at
the VMO
N
inputs.
Figure 8. ADC Monitoring VMON1 to VMON10
Figure 8 shows the ADC circuit arrangement within the ispPAC-POWR1014A device. The ADC can measure all
analog input voltages through the multiplexer, ADC MUX. The programmable attenuator between the ADC mux and
the ADC can be configured as divided-by-3 or divided-by-1 (no attenuation). The divided-by-3 setting is used to
measure voltages from 0V to 6V range and divided-by-1 setting is used to measure the voltages from 0V to 2V
range.
A microcontroller can place a request for any VMO
N
voltage measurement at any time through the I
2
C bus (isp-
PAC-POWR1014A only). Upon the receipt of an I
2
C command, the ADC will be connected to the I
2
C selected
VMO
N
through the ADC MUX. The ADC output is then latched into the I
2
C readout registers.
Calculation
The algorithm to convert the ADC code to the corresponding voltage takes into consideration the attenuation bit
value. In other words, if the attenuation bit is set, then the 10-bit ADC result is automatically multiplied by 3 to cal-
culate the actual voltage at that VMO
N
input. Thus, the I
2
C readout register is 12 bits instead of 10 bits. The follow-
ing formula can always be used to calculate the actual voltage from the ADC code.
Voltage at the VMONx Pins
VMO
N
= I
2
C Readout Register (12 bits
1
, converted to decimal) * 2mV
1
N
ote: ADC_VALUE_HIGH (8 bits), ADC_VALUE_LOW (4 bits) read from I
2
C/SMBUS interface (ispPAC-POWR1014A only).
V
MON1
V
MON2
V
MON3
V
MON10
V
DDA
V
CCINP
ADC
MUX
ADC
Programma
b
le Analog
Atten
u
ator
Programma
b
le
Digital M
u
ltiplier
Internal
V
REF- 2.04
8V
4
10
x3 / x1
÷
3 /
÷
1
12
To I
2
C Reado
u
t Register
(ispPAC-PO
W
R1014A Only)
5
From I
2
C ADC MUX Register
(ispPAC-PO
W
R1014A Only)
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISPPAC-POWR1014-01T48I | In-System Programmable Power Supply Supervisor, Reset Generator and Sequencing Controller |
| ISPPAC-POWR1014-01TN48I | In-System Programmable Power Supply Supervisor, Reset Generator and Sequencing Controller |
| ISPPAC-POWR1014A | In-System Programmable Power Supply Supervisor, Reset Generator and Sequencing Controller |
| ISPPAC-POWR1014A-01T48I | In-System Programmable Power Supply Supervisor, Reset Generator and Sequencing Controller |
| ISPPAC-POWR1014A-01TN48I | In-System Programmable Power Supply Supervisor, Reset Generator and Sequencing Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISPPAC-POWR1014_08 | 制造商:LATTICE 制造商全稱:Lattice Semiconductor 功能描述:In-System Programmable Power Supply Supervisor, Reset Generator and Sequencing Controller |
| ispPAC-POWR1014-01T48I | 功能描述:監(jiān)控電路 Prec. Prog. Pwr Sppl y Seq. Mon. Trim I RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ISPPAC-POWR1014-01TN148I | 制造商:Lattice Semiconductor Corporation 功能描述:#WR MGR ISP RESET & SEQ CNTRL 48TQFP |
| ispPAC-POWR1014-01TN48I | 功能描述:監(jiān)控電路 Prec. Prog. Pwr Sppl y Seq. Mon. Trim I RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ispPAC-POWR1014-02T48I | 功能描述:監(jiān)控電路 Prec Progm Pwr Sply Seq Mon Trim, IND RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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