QT60486-AS Atmel, QT60486-AS Datasheet
QT60486-AS
Specifications of QT60486-AS
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QT60486-AS Summary of contents
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... QM EY ATRIX MOSI 1 MISO 2 QT60166 SCK 3 QT60246 /RST 4 QT60326 Vdd 5 Vss 6 QT60486 XT2 7 XT1 8 TQFP- Automotive panels Machine tools Part Number QT60166-AS QT60246-AS QT60326-AS QT60486-AS Copyright © 2003 QRG Ltd QT60486-AS 0.07/1103 6 XX ™ Y3B 32 Y2B 31 Y1B 30 Y0B 29 Vdd 28 Vss 27 Vdd ...
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... The signal values should normally be in the range from 250 to 750 counts with properly designed key shapes (see appropriate Quantum app note on matrix key design). QmBtn software is available free of charge on Quantum’s website. 2 QT60486-AS 0.07/1103 ...
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... To provide for proper operation during power transitions the devices have an internal brown-out detector set to 4 volts. A Force Reset command, 0x04 is also provided which generates an equivalent hardware reset external reset is not used, this pin may be connected to Vdd. 3 QT60486-AS 0.07/1103 ...
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... Leave open Leave open Leave open Leave open - - - Use 1nF dummy Cs Use 1nF dummy Cs Use 1nF dummy Cs Use 1nF dummy Cs Use 1nF dummy Cs Use 1nF dummy Cs Use 1nF dummy Cs Use 1nF dummy Leave open Leave open - Leave open Vdd QT60486-AS 0.07/1103 ...
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... Use either UART or SPI comm port but not both. Device autodetects communication type depending on which one first receives a command. See Section Table 2.1 for connections when pins are unused. lQ Advanced information; subject to change VDD 220K 220K 220K 220K 220K 4.7nF 4.7nF 4.7nF 4.7nF 4.7nF 4.7nF 220K QT60486-AS 0.07/1103 ...
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... Figure 3-1 SPI Connections Vdd 10K Host MCU QT60xx6 P_IN P_OUT SCK MISO MOSI Clock idle: High Clock shift out edge: Falling Clock data in edge: Rising Max clock rate: 4MHz Tcyc null byte to get QT response QT60486-AS 0.07/1103 DRDY SS SCK MISO MOSI data response ...
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... DRDY is already high at this point, or becomes high, then it is clear to send. Null Bytes: Unlike SPI mode, there is no reason to send null bytes to the QT in UART mode. 7 QT60xx6 DRDY Rx Tx 9600 ~ 115,200 1 8 None 1 QT60486-AS 0.07/1103 ...
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... This one command should be the dominant interrogation command in the host interface; further commands can be issued if the response to 0x06 warrants it. A CRC byte is appended to the response; this CRC folds in the command 0x06 itself initially. 8 QT60486-AS 0.07/1103 ...
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... Returns a bitfield for key ‘k’ where k is from {0..47}. The bitfield indicates as follows: Bit 4: Set if key is enabled Bit 3: Set if key is in detect Bit 2: Set if the key’s reference is less than LSL A CRC byte is appended to the response; this CRC folds in the command 0x8k itself initially. 9 QT60486-AS 0.07/1103 ...
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... This command is for use only during normal operation to try to recover a single key that has failed or is not calibrated correctly. Returns the 1’s compliment of 0xck just before the key is recalibrated. 10 QT60486-AS 0.07/1103 ...
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... Bits 5..0 = 0x3F if no touch. 2nd return byte is CRC-8 of cmmd + return data 0..0xFF Last return byte is CRC-8 of cmmd + return data 6 bytes 0..0xFFFF Returns block data for all keys’ signals 48 words 0..0xFFFF Returns block data for all keys’ references 48 words 11 Notes QT60486-AS 0.07/1103 ...
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... Bit 3 - set if key detect Bit 4 - set if key enabled Used in Run mode. Normal sensing of other keys not affected. CAL of ‘k’ only takes place in the key’s normal timeslot. ~0xck Returns the ones compliment of the cmd char, once the cal is scheduled. 12 Notes QT60486-AS 0.07/1103 ...
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... Decreasing signals should not be compensated quickly, since an approaching finger could be compensated for partially or entirely before even touching the touch pad. However, an obstruction over the Figure 5-1 Thresholds and Drift Compensation Reference Hysteresis Threshold Signal Output QT60486-AS 0.07/1103 ...
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... It is almost always desirable in these cases to cause the key to recalibrate quickly restore normal touch operation. The time required to do this is governed by PRD. In order for this to work, the signal must rise through the positive threshold level PTHR continuously for the PRD period. 14 QT60486-AS 0.07/1103 ...
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... DWELL Default value: 1 (187.5ns) 5.12 Mains Sync - MSYNC The MSync feature uses the WS pin. The Sleep and Sync features can be used simultaneously; the part can be put into Sleep mode, but awakened by a mains sync signal at the desired time. 15 QT60486-AS 0.07/1103 0 (Off) ...
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... Section 6.3 for details) 5.17 Host CRC - HCRC The setups block terminates with a 16-bit CRC, HCRC, of the entire block. The formulae for calculating this CRC and the 8-bit CRC also used in the device are shown in Section 8. 16 QT60486-AS 0.07/1103 100 0x6c ...
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... Upper nibble = serial rate via LUT - 9600, 19.2K, 38.4K, 57.6K, 115.2K (UART) 0..2048 16 48 100 Lower limit of acceptable signal; below this value, declares error 0..255 8 device 0x6c Controls what the LED does; see table, below. 0..65K 16 device - CRC-16 of above setups 17 Page QT60486-AS 0.07/1103 ...
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... Advanced information; subject to change Bit (X line Note: Byte 0 is returned first Default LED pin is active low polarity 0 Key errors have no effect 1 Not active on any keypress 1 Inactive on Sleep 0 Inactive on eeprom error 1 Inactive on Mains sync error 1 Inactive on comms error 0 Communications unmonitored QT60486-AS 0.07/1103 ...
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... QT60486-AS 0.07/1103 Burst UART Rate Global Global - Auto - -9,600- 500µs 19,200 750µs 38,400 57,600 115,200 0 (auto) ...
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... Acquisition resolution Rp Pullup resistors lQ Advanced information; subject to change Min Typ Max 25 20 0.8 2.2 0.6 Vdd-0.7 ± 120 +105 +125 Units Notes mA Not including external components µA Not including external components 4mA sink V 1mA source µA bits kohms DRDY, /SS pins QT60486-AS 0.07/1103 ...
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... BSC 0 7 TQFP Part Number QT60166- QT60246- QT60326- QT60486- Inches Min Max Notes 0.386 0.394 SQ 0.458 0.478 SQ 0.003 0.008 0.018 0.030 0.002 0.006 - 0.047 0.012 0.018 0.031 0.031 BSC 0.315 0.315 BSC 0 7 Keys Marking 16 QT60166-A 24 QT60246-A 32 QT60326-A 48 QT60486-A QT60486-AS 0.07/1103 ...
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... A CRC calculator for Windows is available free of charge from Quantum Research. lQ Advanced information; subject to change crc bit number // shift counter // initialise the shift counter shift counter 22 QT60486-AS 0.07/1103 ...
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Tel: +44 (0)23 8056 5600 Fax: +44 (0)23 8045 3939 The specifications set out in this document are subject to change without notice. All products sold and services supplied by QRG are subject to our Terms and Conditions of ...