參數(shù)資料
型號: AT85C51SND3B1-RTTUL
廠商: Atmel
文件頁數(shù): 31/119頁
文件大?。?/td> 0K
描述: IC DECODER/ENCODER DGTL 100-LQFP
標(biāo)準(zhǔn)包裝: 90
類型: 音頻編碼器/解碼器
應(yīng)用: 移動電話,手機(jī),視頻顯示器
電壓 - 電源,數(shù)字: 1.65 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 100-LQFP
供應(yīng)商設(shè)備封裝: 100-LQFP(14x14)
包裝: 托盤
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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