参数资料
型号: AT85C51SND3B1-7FTUL
厂商: Atmel
文件页数: 33/119页
文件大小: 0K
描述: IC DECODER/ENCODER DGTL 100CBGA
标准包装: 90
类型: 音频编码器/解码器
应用: 移动电话,手机,视频显示器
电压 - 电源,数字: 1.65 V ~ 3.6 V
安装类型: 表面贴装
封装/外壳: 100-TFBGA
供应商设备封装: 100-CTBGA(9x9)
包装: 托盘
20
AT85C51SND3B
7632D–MP3–01/07
Schematic
Figure 6. Regulator Connection
Note:
Depending on power supply scheme, CLV may replace CDC capacitor (see Figure 8).
Low Voltage DC-DC in
AT85C51SND3B2
The low voltage output DC-DC converter supplies power to the internal device and
external devices through LVDD power pin. It operates from a single AAA battery. Its
nominal voltage output is 1.8V.
DC-DC Start-Up
DC-DC start-up is done by asserting the DCPWR input until the voltage reaches its
nominal value (see Section “Power Fail Detector”) and firmware starts execution and
sets the DCEN bit in PCON to maintain the DC-DC enabled. DCPWR input can then be
released. As shown in Figure 8 DCPWR input is asserted by pressing a key connected
to BVSS.
Figure 7. DC-DC Start-Up Phase
DC-DC Shut-Down
DC-DC shut-down is done by two different ways:
Clearing the DCEN bit while DCPWR pin is de-asserted
Detecting the presence of an internal or external 3V supply, e.g. when the device is
connected to USB, DC-DC is disabled to save battery power(1).
Note:
1. If DCEN bit is left set, the DC-DC will restart as soon as the USB power supply
disappears.
DC-DC Connection
Figure 8 shows how to connect external components, inductance and components
value along with power characteristics are specified in the section “DC characteristics”.
Figure 8. Battery DC-DC Connection
Note:
Depending on power supply scheme, CDC1 may replace CLV capacitor (see Figure 6).
HVDD
CHV
VSS
RLVDD
CLV
(*)
VSS
DCPWR
DCEN
DC-DC
Start-Up
LVDD
Firmware
Start-Up
DC-DC
On
DC-DC
Off
LVDD
BVDD
BVSS
B
a
tt
e
ry
LDC
DCLI
C
DC1
(*)
VSS
RLVDD
CVSS
C
DC2
DCPWR
相关PDF资料
PDF描述
JN1FS04FKK CONN PLUG 4POS R/A W/SOCKET SLD
AD1970JSTZRL IC ENCODER BTSC W/CODEC 48-LQFP
ADV7177KSZ IC DAC VIDEO NTSC 3-CH 44MQFP
VI-24L-CU-S CONVERTER MOD DC/DC 28V 200W
VI-24K-CU-S CONVERTER MOD DC/DC 40V 200W
相关代理商/技术参数
参数描述
AT85C51SND3B1N-DDV 功能描述:音频 DSP Microcontroller RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube
AT85C51SND3B1N-RTTUL 功能描述:音频 DSP Microcontroller RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube
AT85C51SND3B1-RTTUL 功能描述:音频 DSP MP3/WMA USB2.0 w/o DAC+DC/DC RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube
AT85C51SND3B2-RTTUL 功能描述:音频 DSP Microcontroller RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube
AT85C51SND3BX 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:MP3 Microcontrollers