qt60325 Quantum Research Group, qt60325 Datasheet - Page 36

• Manufacturer Part Number: qt60325
• Description: 32, 48, 64 Key Qmatrix Keypanel Sensor Ics
• Manufacturer: Quantum Research Group

7 Electrical Specifications
7.1 Absolute Maximum Specifications
Operating temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . as designated by suffix
Storage temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55
V
Max continuous pin current, any control or drive pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mA
Short circuit duration to ground, any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Short circuit duration to V
Voltage forced onto any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to (Vdd + 0.6) Volts
Frequency of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10MHz
Eeprom maximum writes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100,000 write cycles
Flash maximum writes (eeprom backup). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,000 write cycles
7.2 Recommended operating conditions
V
Supply ripple+noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mV p-p max
Cx transverse load capacitance per key from X to Y. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 20pF
Fosc oscillator frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6MHz +/-2%
7.3 DC Specifications
Vdd = 5.0V, Cs = 15nF, Freq = 6.00MHz, Ta = recommended range, unless otherwise noted
7.4 Timing
lQ
DD
DD
Parameter
Parameter
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to +5.5V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4.75 to 5.25V
V
T
T
Tradc
I
I
V
V
Tcm
V
Fck
DDR
DDS
V
A
R
DR
DR
BOD
I
OH
HL
OL
IL
IL
R
P
2
3
Supply current, running
Supply current, sleep
Brown-out detection voltage
Low input logic level
High input logic level
Low output voltage
High output voltage
Input leakage current
Acquisition resolution
Pullup resistors
Tdr delay from response
Multi-byte return spacing
Host command space
SPI Clock rate
ADC delay from R2R setup
Description
Description
DD
, any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Vdd-0.7
Min
Min
8.16
2.2
© Quantum Research Group Ltd.
35
15
15
1
Typ
Typ
20
4
36
1,000
2,000
Max
Max
120
0.8
0.6
1.5
15
±1
8
kohms
Units
Units
bits
MHz
mA
µA
µA
µS
µS
µS
µS
V
V
V
V
V
www.qprox.com
Not including external components
Not including external components
4mA sink
1mA source
Drdy, SS’ pins
From R2R setup to AIN+ sample
Notes
Notes
QT60xx5 / R1.05
O
C to +125
O
C