Amazon Echo Dot (B7W644)

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multiple revisions of this device, use caution
abgn+ac (AC600)
Smart Home Solution Speaker with Clock
Homepage
3rd Party Firmware
dd-wrt
Status Unknown
OpenWrt
Status Unknown
Tomato any flavor
Incompatible
Platform
Brand • Model • Rev
Amazon Echo Dot (4 Gen)
Model Part Number
B7W644
FCC ID
IC ID
Board ID
30-005605
Type
IoT hub, wireless speaker system
CPU1
MediaTek MT8512
CPU1 Type
ARM Cortex-A53
CPU1 Speed
2.0 GHz ( 2 cores )
Flash1 Chip
Micron MT29F4G01ABAFDWB-IT:F
Flash1 Size
512 MiB536,870,912 B <br />4,194,304 Kib <br />524,288 KiB <br />4,096 Mib <br />0.5 GiB <br /> (SPI NAND)
RAM1 Size
512 MiB536,870,912 B <br />4,194,304 Kib <br />524,288 KiB <br />4,096 Mib <br />0.5 GiB <br /> (LPDDR4)
RAM1 Chip
Micron MT53E256M16D1DS-046 WT:B

802dot11 OUI: 68:B6:91

Expansion IF types
none specified
Power
12 VDC, 1.25 A
Connector type
barrel
Flags:
Bluetooth 5.0, Audio out (3.5 mm), Alexa support

Additional chips
Quad-Channel 768kHz Burr-Brown Audio ADC;TI;TLV320ADC5140;;1;
20V Digital Input Class-DG Amplifier;Maxim;MAX98396;;1;
25mW Cap Free Stereo Headphone Amplifier;Diodes Inc;PAM8908;;1;
36-Channel I2C Constant Current RGB LED Driver;TI;LP5036;;1;
PMIC;MediaTek;MT6398AN;;1;

Retail
(Est.) release date November 2020
(Est.) initial retail price (in USD): $60
UPC 840080564401
(UPC DB, On eBay)
ASINs B085M66LH1 Flag of the United States.svg
B085K45C3S Flag of the United States.svg
Country of manuf Vietnam
Radio 1
Radio1 module
unknown
Radio1 module IF
SDIO/UART
Chip1
MediaTek MT7653BSN
Wireless interface OUI
68:B6:91
Antenna Connector Type
none
MIMO status
1x1:1
Wireless Standard
IEEE 802.11a/b/g/n/ac
802.11ac
up to 433 Mbps
802.11n
up to 150 Mbps
802.11g
up to 54 Mbps
802.11b
up to 11 Mbps
802.11a
up to 54 Mbps
WiFi Operating Frequency
2.4 or 5 GHz
 CPU1 brandRadio1 chip1 brandRadio1 chip2 brand
Amazon Echo Dot (B7W644)MediaTekMediaTek
Amazon Echo Dot (C78MP8)MediaTekMediaTek
Amazon Echo Dot (D9N29T)MediaTekMediaTek
Amazon Echo Dot (RS03QR)MediaTekMediaTek
Amazon Echo Dot (S04WQR)Texas InstrumentsAtherosAtheros

For a list of all currently documented MediaTek chipsets with specifications, see MediaTek.

• 433 Mbps - 1SS 5GHz 802.11ac (80MHz chan.),
• 150 Mbps - 1SS 2.4GHz 802.11n (40MHz chan.) = AC600 class

Overview

"30-005605" and "REV 01" are silkscreened on main board.

See also: Amazon Echo Devices

Hardware specification

Dual-core ARM (Cortex-A53)
Amazon AZ1 Neural Edge
  • Storage: 512MB (SPI NAND) Flash
  • Memory: 512MB (LPDDR4) RAM
  • Wi-Fi: MediaTek MT7653BSN (SDIO)
802.11abgn/ac 2.4/5GHz + BT 5.0
  • Power Source: 12V 1.25A via barrel

Links of Interest

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