6 Specifications
6.1 Absolute Maximum Electrical Specifications
Operating temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40OC ~ +105OC
Storage temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55OC ~ +125OC
VDD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 ~ +5.5V
Max continuous pin current, any control or drive pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mA
Short circuit duration to ground, any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Short circuit duration to V , any pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . infinite
Voltage forced onto any pDinD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V ~ (Vdd + 0.6) Volts
Frequency of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17MHz
Eeprom setups maximum writes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100,000 write cycles
6.2 Recommended operating conditions
V
DD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4.75 ~ 5.25V
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
Parameter
Notes
Description
Min
Typ
Max
Units
Iddr
Idds
Vr
Supply current, running
Supply current, sleep
Vdd internal reset voltage
Low input logic level
High input logic level
Low output voltage
25
mA
µA
V
V
V
V
V
µA
bits
kW
kW
20
4
Vil
0.8
0.6
Vhl
Vol
Voh
Iil
Ar
Rp
Rrst
2.2
4mA sink
1mA source
High output voltage
Vdd-0.7
Input leakage current
Acquisition resolution
Internal pullup resistors
Internal /RST pullup resistor
±1
11
50
60
9
20
30
DRDY, /SS, TX pins
6.4 Timing Specifications
Vdd = 5.0V, Cs = 4.7nF, Freq = 16MHz, Ta = recommended range, unless otherwise noted
Parameter
Description
Min
Typ
Max
Units
Notes
T
BS
Burst spacing
500
3,000
µs
Adjustable parameter via Setups
Pulse spacing, average
@ dwell = 125ns
1.80
1.90
2.00
2.75
2.80
2.92
Tpc
Fqt
µs
@ dwell = 187.5ns
@ dwell = 312.5ns
Burst frequency range
@ dwell = 125ns
364
357
342
556
526
500
kHz
Spread spectrum range
@ dwell = 187.5ns
@ dwell = 312.5ns
S1
S2
S3
S4
S5
S6
S7
S8
S9
Fck
È /SS to first È CLK edge
È CLK to valid MISO
Last Ç CLK to Ç /SS
Ç /SS to 3-state MISO
Ç /SS to falling DRDY
DRDY low pulse width
CLK low pulse width
CLK high pulse width
CLK period
125
ns
ns
ns
ns
µs
µs
ns
ns
ns
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
20
25
20
20
1
125
125
250
SPI Clock rate
4
MHz
lQ
27
QT60486-AS R8.01/0105
QUANTUM [ QUANTUM RESEARCH GROUP ]
