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参数资料
| 型号： | ADUC848BCPZ62-3 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 99/108页 |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH W/16BIT ADC 56-CSP |
| 标准包装： | 1 |
| 系列： | MicroConverter® ADuC8xx |
| 核心处理器： | 8052 |
| 芯体尺寸： | 8-位 |
| 速度： | 12.58MHz |
| 连通性： | I²C，SPI，UART/USART |
| 外围设备： | POR，PSM，PWM，温度传感器，WDT |
| 输入/输出数： | 34 |
| 程序存储器容量： | 62KB（62K x 8） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 4K x 8 |
| RAM 容量： | 2.25K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 3.6 V |
| 数据转换器： | A/D 10x16b; D/A 1x12b，2x16b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 56-VFQFN 裸露焊盘，CSP |
| 包装： | 托盘 |
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ADuC845/ADuC847/ADuC848
Data Sheet
Rev. C | Page 90 of 108
DGND
AGND
PLACE ANALOG
COMPONENTS
HERE
PLACE DIGITAL
COMPONENTS
HERE
GND
PLACE ANALOG
COMPONENTS
HERE
PLACE DIGITAL
COMPONENTS
HERE
DGND
a.
AGND
PLACE ANALOG
COMPONENTS
HERE
PLACE DIGITAL
COMPONENTS
HERE
b.
c.
04741-064
Figure 68. System Grounding Schemes
If the user plans to connect fast logic signals (rise/fall time < 5 ns)
to any of the ADuC845/ADuC847/ADuC848’s digital inputs,
add a series resistor to each relevant line to keep rise and fall
times longer than 5 ns at the parts’ input pins. A value of 100 Ω
or 200 Ω is usually sufficient to prevent high speed signals from
coupling capacitively into the part and affecting the accuracy of
ADC conversions.
When using the LFCSP package, it is recommended that the
paddle underneath the chip be soldered to the board to provide
maximum mechanical stability. However, it is recommended
that this paddle not be grounded but left floating. All results
and specifications contained in this data sheet are taken or
recorded with the paddle floating.
System Self-Identification
In some hardware designs, it may be advantageous for the
software to be able to identify the host MicroConverter.
The CHIPID SFR is a read-only register located at SFR address
C2H. The upper nibble of this SFR designates the MicroConverter
within the Σ-Δ ADC family. User software can read this SFR to
identify the host MicroConverter and therefore execute slightly
different code if required. The CHIPID SFR reads as follows for
the Σ-Δ ADC family of MicroConverter products. Note that the
ADuC845/ADuC847/ADuC848 are treated as one part as far as
the CHIPID is concerned.
Table 63. CHIPID Values for Σ-Δ MicroConverter Products
Part
CHIPID
ADuC816
1xH
ADuC824
0xH
ADuC836
3xH
ADuC834
2xH
ADuC845/ADuC847/ADuC848
AxH
Clock Oscillator
As described earlier, the core clock frequency for the ADuC845/
ADuC847/ADuC848 is generated from an on-chip PLL that
locks onto a multiple (384 times) of 32.768 kHz. The latter is
generated from an internal clock oscillator. To use the internal
clock oscillator, connect a 32.768 kHz parallel resonant crystal
between XTAL1 and XTAL2 as shown in Figure 69.
XTAL2
32.768kHz
12pF
XTAL1
TO INTERNAL PLL
ADuC845/ADuC847/ADuC848
04741-065
32
33
Figure 69. Crystal Connectivity to ADuC845/ADuC847/ADuC848
As shown in the typical external crystal connection diagram in
Figure 69, two internal 12 pF capacitors are provided on-chip.
These are connected internally, directly to the XTAL1 and XTAL2
pins. The total input capacitance at both pins is detailed in the
Specifications table. Note that the total capacitance required for
a particular crystal must be in accordance with the crystal
manufacturer. However, in most cases, no additional external
capacitance is required above that already supplied on-chip.
OTHER HARDWARE CONSIDERATIONS
In-Circuit Serial Download Access
Nearly all ADuC845/ADuC847/ADuC848 designs can take
advantage of the in-circuit reprogrammability of the chip. This
is accomplished by a connection to the parts’ UART, which
requires an external RS-232 chip for level translation if down-
loading code from a PC. Basic configuration of an RS-232
connection is shown in Figure 70 with a simple ADM3202-
based circuit. If users would rather not include an RS-232 chip
on the target board, refer to Application Note uC006,
“A 4-Wire UART-to-PC Interface” available at
www.analog.com/microconverter, for a simple (and zero-cost-
per-board) method of gaining in-circuit serial download access
to the part.
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相关代理商/技术参数 |
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| ADUC848BCPZ62-5 | 功能描述:IC MCU FLASH W/16BIT ADC 56LFCSP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA，UART/USART 外围设备:欠压检测/复位，LED，POR，PWM，WDT 输入/输出数:16 程序存储器容量:4KB（4K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND |
| ADUC848BCPZ8-3 | 功能描述:IC MCU FLASH W/16BIT ADC 56-CSP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA，UART/USART 外围设备:欠压检测/复位，LED，POR，PWM，WDT 输入/输出数:16 程序存储器容量:4KB（4K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND |
| ADUC848BCPZ8-5 | 功能描述:IC MCU FLASH W/16BIT ADC 56-CSP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA，UART/USART 外围设备:欠压检测/复位，LED，POR，PWM，WDT 输入/输出数:16 程序存储器容量:4KB（4K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND |
| ADUC848BS32-3 | 制造商:AD 制造商全称:Analog Devices 功能描述:MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| ADUC848BS32-5 | 制造商:Analog Devices 功能描述:IC MICROCONTROLLER |
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