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â‘ Low-power CMOS process manufacturing.
②Adopt adaptive incremental (δ) modulation (ADM) mode.
â‘¢The addressing capability of UM5101 is 64k bits.
â‘£The external memory can be selected as one or two.
⑤The recording and reproduction of voice signals rely on external DRAM.
â‘¥It has two recording/playback modes: manual recording and playback mode and automatic recording and playback mode.
⑦ There are two kinds of sampling frequency and playback rate to choose from.
⑧With the function of only replaying twice.
⑨Dual power supply, power supply voltage: DC 5V and DC 8V.
The pin layout of UM5101 is shown in the figure below: 
The block diagram of the internal structure of UM5101 is shown in the following figure: 
UM5101 speech synthesis chip has two working modes: automatic operation and manual operation mode.
a. Automatic recording/reproduction mode
The 18-pin MODSE terminal of UM5101 is connected to a high level (8v) n inch. After UM5101 is powered on, it immediately enters automatic recording/restart
In the health mode, the LEDOUT terminal is low, and the external LED lights up.
b. Manual recording/reproduction mode
When pin 18 of UM5101 is connected to low level, it will enter the waiting state of manual recording/reproduction operation mode after power on.
The basic application circuit of UMSl01 is shown in the figure below: 
This USB 3.0 fast data transmission driver The USB 3.0 center synchronization data transmission speed is as high as 5Gbps. Compatible with Windows XP / Vista / Win 7 / Win 8 / Win 10, Mac OS 10, Linux and above, compatible with USB 2.0 Connections.
Basic features of speech synthesis chip UM5101: