参数资料
型号: AT85C51SND3B1-RTTUL
厂商: Atmel
文件页数: 31/119页
文件大小: 0K
描述: IC DECODER/ENCODER DGTL 100-LQFP
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-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
19
AT85C51SND3B
7632D–MP3–01/07
Power Management
The Power Management of AT85C51SND3B dervatives implements all the internal
power circuitry (regulators, links…) as well as power failure detector and reset circuitry.
Power Supply
The AT85C51SND3B2 embeds the regulators and a DC to DC step-up convertor to be
able to operate from either USB power supply (5V nominal) or from a single cell battery
such as AAA battery.
The AT85C51SND3B0 and AT85C51SND3B1 embed the regulators to be able to oper-
ate from either USB power supply (5V nominal) or from an external 3 volts supply.
Figure 5. Power Supply Diagram
Note:
1. External connection mandatory when 1.8V DC-DC is used.
Regulators
The high voltage regulator supplies power to the external devices through HVDD power
pin. Its nominal voltage output is 3V.
The low voltage regulator supplies power to the internal device and external devices
through RLVDD power pin. Its nominal voltage output is 1.8V.
Figure 6 shows how to connect external components, capacitors value along with power
characteristics are specified in the section “DC characteristics”.
HVDET
PSTA.6
LVDD
DCPWR
UVCC
UVSS
DCEN
PCON.3
DCLI
HVDD
VSS
BVDD
BVSS
RLVDD
UVDET
PSTA.7
3 V
Regulator
1.8 V DC-DC
Battery Monitor
1.8 V
Regulator
VBAT
Optional
Connection(1)
DCPBST
PCON.5
To Internal Core
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