ak4183 AKM Semiconductor, Inc., ak4183 Datasheet
ak4183
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ak4183 Summary of contents
Page 1
... A/D conversions. In addition to location, the AK4183 also measures touch pressure. As the package size of 10 pin TMSOP is 4.0mm x 2.9mm this is much smaller than QFN and BGA package. AK4183 is the best fit for cellular phone, PDA, or other portable devices. VREF+ VREF- AIN+ ...
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... This pin is “L” during the pen down on pen interrupt enabled state otherwise this pin is “H”. This pin is “L” during pen interrupt disabled state regardless pen touch bus Slave Address bit serial data serial clock 2 10 SCL 9 SDA 8 CAD0 PENIRQN 7 GND 6 Description [AK4183] 2006/04 ...
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... Note 1. All voltages with respect to ground. WARNING: AKM assumes no responsibility for the usage beyond the conditions in this datasheet. MS0500-E-00 Absolute Maximum Ratings Symbol VCC IIN VIN IOUTDRV Ta Tstg Recommended Operating Conditions Symbol Min VCC 2.5 3 [AK4183] Min max -0.3 6.0 ±10 - -0.3 6.0(VCC+0.3) 50 -40 85 -65 150 typ max 2.7 3 ...
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... Standard Mode: SCL=100KHz Power Down PD0=”0“ Fast Mode: Not Addressed Standard Mode: SCL=100KHz Full Power Down (Control command PD0= ”0“ SDA=SCL= VCC) MS0500-E-00 Analog Characteristics min. 11 SCL=400KHz SCL=400KHz 4 [AK4183] typ. max. Units 12 Bits 12 Bits ±2 LSB ±1 LSB ±6 LSB ± ...
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... XP, YP, XN, YN pins Switching Characteristics Symbol fSCL tBUF tHD:STA tLOW tHIGH tSU:STA (Note 2) tHD:DAT tSU:DAT tR tF tSU:STO tSP Cb tR tHIGH tF tHD:DAT tSU:DAT tSU:STA Start Figure 1 AK4183 Timing Diagram 5 min. typ. max. 0.7xVCC - - 0.3xVCC -10 10 VCC-0.4 0.4 -10 10 -50 50 min typ max 30 400 1.3 ...
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... ASAHI KASEI A/D Converter for Touch Screen The AK4183 incorporates a 12-bit successive approximation resistor (SAR) A/D converter for position measurement. The architecture is based on a capacitive redistribution algorithm, and an internal capacitor array functions as the sample/hold (S/H) circuit. The SAR A/D converter output is a straight binary format as shown below: (∆ ...
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... Rtouch = (Rxplate*Xposition/4096)*[(4096/Z1) – 1] – Ryplate*[1 – (Yposition/4096)] VCC YP-Driver VREF+ AIN+ ADC VREF- AIN- XN XN-Driver SWON YN a) Z1-Position Measurement MS0500-E-00 VCC YP-Driver SW ON Rtouch VREF+ ADC VREF- XN-Driver Z2-Position Measurement Figure 3 Pen Pressure Measurements 7 [AK4183 Rtouch AIN+ AIN 2006/04 ...
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... Sr : Repeated start condition [Data transfer] All commands are preceded by a START condition. After the START condition, a slave address is sent. After the AK4183 recognizes the START condition, the device interfaced to the bus waits for the slave address to be transmitted over the SDA line. If the transmitted slave address matches an address for one of the devices, the designated slave device pulls the SDA line to LOW (ACKNOWLEDGE) ...
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... The AK4183 will generates an acknowledge after each byte has been received. In the read mode, the slave, AK4183 will transmit eight bits of data, release the SDA line and monitor the line for an acknowledge acknowledge is detected and no STOP condition is generated by the master, the slave will continue to transmit data acknowledge is not detected, the slave will terminate further data transmissions and await the STOP condition ...
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... ASAHI KASEI [WRITE Operations] The second byte that followed by address byte consists of the control command byte of the AK4183. The operational mode is determined by control command. The bit format is MSB first and 8 bits width. Control command is described in the Table 3. The AK4183 generates an acknowledge after each byte has been received. A control command transfer is terminated by a STOP condition or Repeated Start condition generated by the master ...
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... AK4183 supports the sleep mode that enables touch panel interface to put open state and disables pen interrupt function. AK4183 goes into the sleep mode when control command is sent to AK4183 as shown Table 2. The selection of the sleep mode is set by “MODE” bit of the control command. The state of both the output of PENIRQN pin and the connection with touch panel interface (XP, YP, XN, and YN) are the following Table 2 ...
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... ASAHI KASEI Control Command The control command, 8 bits, provided to the AK4183 via SDA, is shown in the following table. This command includes start bit, channel selection bit, power-down bit and resolution bit. The AK4183 latches the serial command at the rising edge of SCL. Refer to the detailed information regarding the bit order, function, the status of driver switch, ADC input as shown in Table 3 ...
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... SCL regardless PD0 bit when accelerate command (A2= “0”) is sent. The accelerate command is to accelerate the timing of desired driver ensure that AK4183 needs more settling time. As for actually sampling is on the time of READ operation, it becomes possible to take settling time long even when the impedance of the touch screen is large. ...
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... ASAHI KASEI Pen Interrupt The AK4183 has a pen-interrupt function to detect the pen touch on the touch panel. This function will use as the interrupt of the microprocessor. Pen interrupt function is enabled at power-down state. YN driver is on and this pin is connected to GND at the power down state. And XP pin is pulled up via an internal resister (Ri), typically 10KΩ. If the touch plate is touched by pen or stylus, the current flows via < ...
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... ASAHI KASEI 10pin TMSOP 0.5mm pitch Package & Lead frame material Package molding compound: Epoxy Lead frame material: Cu Lead frame surface treatment: Sn – Bi (Pb free) MS0500-E-00 Package 2.9±0 0.5 0.2±0.1 15 [AK4183] (Unit : mm) 0~10° +0.1 0.127 -0.05 2006/04 ...
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... ASAHI KASEI 10pin 6pin ( (3) (4) (5) (1) 1pin 5pin MS0500-E-00 Marking (1) #1PinIndicator (2) Chip No. (AK4183=183) (3) Year 1 digit (4) Month 1digit (5) Manage code (internal) 16 [AK4183] 2006/04 ...
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... AKM harmless from any and all claims arising from the use of said product in the absence of such notification. MS0500-E-00 IMPORTANT NOTICE 17 [AK4183] 2006/04 ...