Original Genuine CH331A SSOP-20 USB Flash Drive Control Chip
Original Genuine CH331A SSOP-20 USB Flash Drive Control Chip
Regular price
¥4.90 CNY
Regular price
¥0.00 CNY
Sale price
¥4.90 CNY
Quantity
Couldn't load pickup availability
WCH/CH331A/SSOP-20
USB flash drive control chip
CH331 is a control chip for small-capacity USB flash drives. With the addition of a serial memory chip, it can achieve small-capacity USB flash drives ranging from 2K8 to 4MB.
Electrical parameters
(Test conditions: TA=25℃, VCC=5V, excluding the pins connected to the USB bus)
| Name | Parameter description | Minimum value | Typical value | Maximum value | Unit |
| VCC |
Power supply voltage (V3 pin not connected to VCC pin) |
4.5 | 5 | 5.3 | V |
| ICC | Total power supply current during operation | 13 | 30 | mA | |
| ISLP |
The total power supply current when the USB is suspended |
0.3 | mA | ||
| VIL | Low-level input voltage | -0.5 | 0.7 | V | |
| VIH | High-level input voltage | 2.0 | VCC+0.5 |
V | |
| VOL | Low-level output voltage (4mA intake current) | 0.5 | V | ||
| VOH | High-level output voltage (4mA output current)(only 100uA output current during chip reset) |
VCC-0.5 | V | ||
| IUP |
The input current at the input terminal of the built-in pull-up resistor |
40 | 80 | 160 | uA |
| VR |
The voltage threshold for power-on reset of the power supply |
2.7 | V |
Small-capacity USB flash drive
Products photography
