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參數(shù)資料
| 型號(hào)： | ADUC7034BCPZ |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 89/136頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU FLASH 32K ANLG IO 48LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | MicroConverter® ADuC7xxx |
| 核心處理器： | ARM7 |
| 芯體尺寸： | 16/32-位 |
| 速度： | 20.48MHz |
| 連通性： | LIN，SPI，UART/USART |
| 外圍設(shè)備： | POR，PSM，溫度傳感器，WDT |
| 輸入/輸出數(shù)： | 9 |
| 程序存儲(chǔ)器容量： | 32KB（16K x 16） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 1K x 32 |
| 電壓 - 電源 (Vcc/Vdd)： | 3.5 V ~ 18 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 2x16b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 115°C |
| 封裝/外殼： | 48-VFQFN 裸露焊盤，CSP |
| 包裝： | 托盤 |
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ADuC7034
Rev. B | Page 56 of 136
ADC Low Power Plus Mode
In low power plus mode, the I-ADC channel is enabled in a
mode almost identical to low power mode (ADCMDE[4:3]).
However, in this mode, the I-ADC gain is fixed at 512 and the
ADC consumes an additional 200 μA (approximately) to yield
improved noise performance relative to the low power mode
setting.
All ADC peripheral functions (result counter, digital comparator,
and accumulator) described in the ADC Normal Power Mode
section can also be enabled in low power plus mode.
As in low power mode, only the I-ADC is configured to run at a
low update rate and to continuously monitor battery current.
The MCU is in power-down mode and wakes up when the I-ADC
interrupts the MCU, which occurs after the I-ADC detects a
current conversion result that exceeds a preprogrammed threshold,
a setpoint, or a set number of conversions.
It is also possible to select either the ADC precision voltage
reference or the ADC low power mode voltage reference via
ADCMDE[5].
ADC COMPARATOR AND ACCUMULATOR
The incorporation of comparator logic on the I-ADC allows the
I-ADC result to generate an interrupt after a predefined number of
conversions has elapsed or a programmable threshold value has
been exceeded.
Every I-ADC result can be compared with a preset threshold
level (ADC0TH) that is set via ADCCFG[4:3]. In this case, an
MCU interrupt is generated if the absolute (sign independent)
value of the ADC result is greater than the preprogrammed
comparator threshold level. Alternatively, as an extended function
of the comparator, user code can configure a threshold counter
(ADC0THV) to monitor the number of I-ADC results that occur
above or below the preset threshold level. In this case, an ADC
interrupt is generated when the threshold counter reaches a
preset value that is set via ADC0TCL.
By also incorporating a 32-bit accumulator (ADC0ACC) function,
which can be configured via ADCCFG[6:5], the I-ADC can add
or subtract multiple I-ADC sample results. User code can read
the accumulated value directly from ADC0ACC without any
further software processing.
ADC SINC3 DIGITAL FILTER RESPONSE
The overall frequency response on all ADuC7034 ADCs is
dominated by the low-pass filter response of the on-chip sinc3
digital filters. The sinc3 filters are used to decimate the ADC
Σ-Δ modulator output data bit stream to generate a valid 16-bit
data result. The digital filter response is identical for all ADCs
and is configured via the 16-bit ADC filter register (ADCFLT).
This register determines the overall throughput rate of the ADCs.
The noise resolution of the ADCs is determined by the pro-
grammed ADC throughput rate. In the case of the current
channel ADC, the noise resolution is determined by throughput
rate and selected gain.
The overall frequency response and the ADC throughput is
dominated by the configuration of the sinc3 filter decimation
factor (SF) bits (ADCFLT[6:0]) and the averaging factor (AF)
bits (ADCFLT[13:8]). Due to limitations on the digital filter
internal data path, there are some limitations on the allowable
combinations of SF and AF that can be used to generate a
required ADC output rate. This restriction limits the minimum
ADC update to 4 Hz in normal power mode and to 1 Hz in low
power mode. The calculation of the ADC throughput rate is
detailed in the ADCFLT MMR bit designations table (Table 38),
and the restrictions on allowable combinations of AF and SF
values are outlined in Table 40.
By default, ADCFLT = 0x0007 configures the ADCs for a
throughput of 1 kHz with all other filtering options (chop,
running average, averaging factor, and sinc3 modify) disabled.
A typical filter response based on this default configuration is
shown in Figure 21.
–100
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
500 1000 1500 2000 2500 3000 3500 4000 4500 5000
AT
T
E
NUA
T
IO
N
(
d
B)
FREQUENCY (kHz)
07
11
6-
0
19
Figure 21. Typical Digital Filter Response at fADC = 1 kHz
(ADCFLT = 0x0007)
In addition, a sinc3 modify bit (ADCFLT[7]) is available in the
ADCFLT register. This bit is set by user code and modifies the
standard sinc3 frequency response to increase the filter stop-
band rejection by approximately 5 dB. This is achieved by inserting
a second notch at the location determined by
fNOTCH2 = 1.333 × fNOTCH
where fNOTCH is the location of the first notch in the response.
There is a slight increase in ADC noise if the sinc3 modify bit is
active. Figure 22 shows the modified 1 kHz filter response when
the sinc3 modify bit is active. The new notch is clearly visible at
1.33 kHz, as is the improvement in stop-band rejection when
compared with the standard 1 kHz response.
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| ADUC7034BCPZ-RL | 功能描述:IC MCU FLASH 32K ANLG IO 48LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC7xxx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC7036 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Integrated Precision Battery Sensor for Automotive |
| ADUC7036BCPZ | 功能描述:IC MCU FLASH 96K ANLGI/O 48LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC7xxx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC7036BCPZ-RL | 功能描述:IC SENSOR AUTO 96K FLASH 48LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC7xxx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC7036CCPZ | 功能描述:IC MCU 96K FLASH DUAL 48LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC7xxx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
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