qt60326 Quantum Research Group, qt60326 Datasheet - Page 27

• Manufacturer Part Number: qt60326
• Description: 32 & 48 Key Qmatrix Ics
• Manufacturer: Quantum Research Group

6 Specifications
6.1 Absolute Maximum Electrical Specifications
Operating temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
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 ~ (Vdd + 0.6) Volts
Frequency of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17MHz
Eeprom setups maximum writes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100,000 write cycles
6.2 Recommended operating conditions
V
Supply ripple+noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mV p-p max
Cx transverse load capacitance per key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 ~ 20pF
Fosc oscillator frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16MHz +/-2%
6.3 DC Specifications
Vdd = 5.0V, Cs = 4.7nF, Freq = 16MHz, Ta = recommended range, unless otherwise noted
6.4 Timing Specifications
Vdd = 5.0V, Cs = 4.7nF, Freq = 16MHz, Ta = recommended range, unless otherwise noted
)
DD
DD
Parameter
Parameter
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 ~ +5.5V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4.75 ~ 5.25V
Idds
Voh
Rrst
Iddr
Tpc
Fck
T
Vhl
Vol
Fqt
Rp
S1
S2
S3
S4
S5
S6
S7
S8
S9
Vil
Vr
Ar
Iil
BS
Supply current, running
Supply current, sleep
Vdd internal reset voltage
Low input logic level
High input logic level
Low output voltage
High output voltage
Input leakage current
Acquisition resolution
Internal pullup resistors
Internal /RST pullup resistor
Burst spacing
Pulse spacing, average
Burst frequency range
Last
DRDY low pulse width
CLK low pulse width
CLK high pulse width
CLK period
SPI Clock rate
/SS to first
CLK to valid MISO
/SS to 3-state MISO
/SS to falling DRDY
@ dwell = 125ns
@ dwell = 187.5ns
@ dwell = 312.5ns
@ dwell = 125ns
@ dwell = 187.5ns
@ dwell = 312.5ns
CLK to
Description
Description
DD
, any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
CLK edge
/SS
Vdd-0.7
Min
1.80
1.90
2.00
Min
500
364
357
342
125
125
125
250
2.2
20
30
25
1
Typ
27
Typ
20
4
9
3,000
Max
Max
2.75
2.80
2.92
556
526
500
0.8
0.6
25
±1
11
50
60
20
20
20
4
Units
Units
MHz
kHz
mA
bits
kW
kW
µA
µA
µs
µs
ns
ns
ns
ns
µs
µs
ns
ns
ns
V
V
V
V
V
4mA sink
1mA source
DRDY, /SS, TX pins
Adjustable parameter via Setups
Spread spectrum range
SPI parameter controlled by host
SPI parameter controlled by QT
SPI parameter controlled by host
SPI parameter controlled by QT
SPI parameter controlled by QT
SPI parameter controlled by QT
SPI parameter controlled by host
SPI parameter controlled by host
SPI parameter controlled by host
SPI parameter controlled by host
QT60486-AS R8.01/0105
Notes
Notes
O
O
C ~ +105
C ~ +125
O
O
C
C