User Manual

6 Specifications
6.1 Absolute Maximum Electrical Specifications
Operating temp.................................................................... -40
O
C to +105
O
C
Storage temp......................................................................-55
O
C to +125
O
C
V
DD ..................................................................................-0.5 to +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
DD , any pin........................................................... infinite
Voltage forced onto any pin.................................................. -0.6V to (Vdd + 0.6) Volts
Eeprom setups maximum writes.................................................. 100,000 write cycles
6.2 Recommended operating conditions
V DD ................................................................................ +3.0V to 5.25V
Supply ripple+noise................................................................... 5mV p-p max
Cx transverse load capacitance per key..................................................... 0 to 20pF
6.3 DC Specifications
Vdd = 5.0V, Cs = 4.7nF, Rs = 470K; Ta = recommended range, unless otherwise noted
k✡8030Internal /RST pullup resistorRrst
DRDY, /SS pinsk✡50 20Internal pullup resistorsRp
bits119Acquisition resolutionAr
µA±1Input leakage currentIil
1mA sourceVVdd-0.7High output voltageVoh
4mA sinkV0.6Low output voltageVol
V2.2High input logic levelVhl
V0.8Low input logic levelVil
V2.92.7 Vdd internal reset voltageVr
Excluding external componentsmA25Supply current, runningIddr
NotesUnitsMaxTypMinDescriptionParameter
6.4 Timing Specifications
Max guaranteed is a min of 1.5MHzMHz1.5SPI Clock rateFck
SPI parameter controlled by hostns667CLK periodS9
SPI parameter controlled by hostns333CLK high pulse widthS8
SPI parameter controlled by hostns333CLK low pulse widthS7
SPI parameter controlled by QTµs1DRDY low pulse widthS6
SPI parameter controlled by QTµs40Ç /SS to falling DRDYS5
SPI parameter controlled by QTns20Ç /SS to 3-state MISOS4
SPI parameter controlled by hostns25Last Ç CLK to Ç /SSS3
SPI parameter controlled by QTns20È CLK to valid MISOS2
SPI parameter controlled by hostns333È /SS to first È CLK edgeS1
%±8Burst modulation, percentFm
kHz226Burst center frequencyFc
Adjustable parameter via Setupsµs3,000500Burst spacingT
BS
NotesUnitsMaxTypMinDescriptionParameter
lQ 24 QT60248-AS R4.02/0405