NT6881
Absolute Maximum Rating*
*Comments
Stresses above those listed under "Absolute Maximum
Rating" may cause permanent damage to the device.
These are stress ratings only. Functional operation of this
device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied and exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
DC Supply Voltage . . . . . . . . . . . . . -0.3V to +7.0V
Input/Output Voltage . . . . . GND - 0.2V to VDD + 0.2V
°
°
°
Operating Ambient Temperature . . . . . . . 0 C to 70
C
C
°
Storage Temperature . . . . . . . . . . . -55 C to +125
Operating Voltage (VDD) . . . . . . . . . . . +4.4V to +5.25V
DC Electrical Characteristics (VDD = 5V, GND = 0V, TA = 25°C, Fosc = 6MHz, unless otherwise noted)
Symbol
VDD
IOP
Parameters
Operating Voltage
Min.
Typ.
Max.
5.25
20
Unit
V
Conditions
4.4
5
Operating Current
mA
µA
V
No load
ISP
Suspend Current
150
Note 1
VIH
Input High Voltage
2
VIL
Input Low Voltage
0.8
V
VOH
VOL1
VOL2
ILED
Output High Voltage
Output Low Voltage (P0/P1/P2)
Output Low Voltage (P3)
LED Sink Current
2.4
V
IOH = -100µA
IOL1 = 4mA
IOL2 = 5mA
VOL = 3.2V
0.4
0.4
14
V
V
6
10
mA
Note 1: The test condition of ISP is when both of 2 things occur, 1) an oscillation stop and 2) no application circuit is
applied. When an application circuit is applied in the keyboard, and the PC is suspended, the suspend
current of the keyboard must be less than 500µA.
AC Electrical Characteristics (VDD = 5V, GND = 0V, TA = 25°C, Fosc = 6MHz, unless otherwise noted)
Symbol
FOSC
Parameters
Oscillator Frequency
Min.
5.97
1.67
Typ.
Max.
Unit
MHz
ms
Conditions
6
6.03
OSC within +/- 0.5%
10 system clocks
TRSTB
RESET Input Low Pulse Width
Power On Reset Time
TPOR
5
30
ms
USB DC/AC SPECIFICATIONS
Please refer to UNIVERSAL SERIAL BUS specification Version 1.0 Chapter 7.
15
ETC [ ETC ]
