ST7263 STMICROELECTRONICS [STMicroelectronics], ST7263 Datasheet - Page 95

• Manufacturer Part Number: ST7263
• Description: LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

7.3 OPERATING CONDITIONS
General Operating Conditions
(T
Note 1: USB 1.1 specifies that the power supply must be between 4.00 and 5.25 Volts. The USB cell is
therefore guaranteed only in that range.
A
Symbol
= 0 to +70°C unless otherwise specified)
f
V
OSC
DD
Supply voltage
External clock frequency
Parameter
1)
f
f
f
USB guaranteed
f
USB not guaranteed
CPU
CPU
CPU
CPU
= 4 MHz ; USB not guaranteed
= 8 MHz ; USB not guaranteed
= 8 MHz or 4 MHz
= 8 MHz or 4 MHz
Conditions
3.00
5.25
V
Min
4.0
12
IT+
Max
4.00
4.00
5.25
5.50
24
ST7263
95/109
MHz
Unit
V
V