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| 型號(hào)： | ST92P141K4B6/XXX |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, 25 MHz, MICROCONTROLLER, PDIP32 |
| 封裝： | PLASTIC, SDIP-32 |
| 文件頁(yè)數(shù)： | 56/179頁(yè) |
| 文件大小： | 1905K |
| 代理商： | ST92P141K4B6/XXX |
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ST92141 - ANALOG TO DIGITAL CONVERTER (ADC)
ANALOG TO DIGITAL CONVERTER (Cont’d)
On devices where two A/D Converters are present
they can be triggered from the same source.
7.6.2.3 Analog Watchdogs
Two internal Analog Watchdogs are available for
highly flexible automatic threshold monitoring of
external analog signal levels.
Analog channels 6 and 7 monitor an acceptable
voltage level window for the converted analog in-
puts. The external voltages applied to inputs 6 and
7 are considered normal while they remain below
their respective Upper thresholds, and above or at
their respective Lower thresholds.
When the external signal voltage level is greater
than, or equal to, the upper programmed voltage
limit, or when it is less than the lower programmed
voltage limit, a maskable interrupt request is gen-
erated and the Compare Results Register is up-
dated in order to flag the threshold (Upper or Low-
er) and channel (6 or 7) responsible for the inter-
rupt. The four threshold voltages are user pro-
grammable in dedicated registers (08h to 0Bh) of
the ADC register page. Only the 4 MSBs of the
Compare Results Register are used as flags, each
of the four MSBs being associated with a threshold
condition.
Following a reset, these flags are reset. During
normal ADC operation, the CRR bits are set, in or-
der to flag an out of range condition and are auto-
matically reset by hardware after a software reset
of the Analog Watchdog Request flag in the ICR
Register.
7.6.2.4 Power Down Mode
Before enabling an A/D conversion, the POW bit of
the Control Logic Register must be set; this must
be done at least 60s before the first conversion
start, in order to correctly bias the analog section
of the converter circuitry.
When the ADC is not required, the POW bit may
be reset in order to reduce the total power con-
sumption. This is the reset configuration, and this
state is also selected automatically when the ST9
is placed in Halt Mode (following the execution of
the halt instruction).
Figure 79. A/D Trigger Source
Converter
External Trigger
On Chip Event
(Internal trigger)
A/D 0
EXTRG pin
MFT 0
A/D 1
Analog Voltage
Upper threshold
Lower threshold
Normal Area
(Window Guarded)
9
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PDF描述 |
|---|---|
| ST92T141K4M6 | 16-BIT, OTPROM, 25 MHz, MICROCONTROLLER, PDSO34 |
| ST92R195C9 | 16-BIT, 24 MHz, MICROCONTROLLER, PQFP80 |
| STA2058 | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP64 |
| STCD1020RDG6E | PLL BASED CLOCK DRIVER, PDSO8 |
| STCD23300F35F | 2330 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PBGA12 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST92T141K4B6 | 功能描述:8位微控制器 -MCU OTP EPROM 16K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ST92T141K4M6 | 功能描述:8位微控制器 -MCU OTP EPROM 16K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ST92T163R4T1 | 功能描述:8位微控制器 -MCU OTP EPROM 20K USB/I2 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ST92T196/JAP | 制造商:STMicroelectronics 功能描述: |
| ST92T96N9B1/AIN | 制造商:STMicroelectronics 功能描述: |
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