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1、Microarray Microelectronics Corp., LTD AFS120 Area Silicon-based Fingerprint Sensor AFS120 Specification Ver. 1.1 马冰洋 1 3 5 1 0 5 8 3 8 0 6电 话： 0 7 5 5 - 6 1 5 9 1 8 9 2 - 8 0 0 8 传 真： 0 7 5 5 - 6 1 5 9 1 8 8 1香港众鑫微电子有限公司 深圳市宝安区互联网产业基地A 区A 栋2 0 9 DMicroarray Microelectronics Corp., LTD AFS120 Rev Da
2、te Author Description V0.9 2014-04-31 Lyy Modified from AFS128 specification Document V0.91 2014-05-03 Lyy Add CMD 0x78 Add AFS120 Module specification Document V1.0 2014-09-26 Alex Add Package/Module Dimension and Reference Circuit Document V1.1 2014-09-30 Alex Modify the Package Dimension Document
3、 Microarray Microelectronics Corp., LTD AFS120 1. Technical indexes 120 x 120 508dpi Sense Array 6.0mm x 6.0mm Sensor Size 6.58mm x 6.13mm x 0.25mm Package Size 8,78mm x 8.33mm x 1.1mm Rectangle Module Min Size 10.36mm x1.1mm Circular Module Min Size Each pixel has 8bit grey depth SPI Slaver Interfa
4、ce, Maximum baud rate 16MHz Max frame rate: 100fps (120 x 12016MHz) 15KV air discharge protection, 8KV contact discharge protection Cover with 200um ceramic Internal 12MHz system OSC Internal 4KHz low power OSC Internal POR/BOR 2.7V-3.63V Core Voltage 1.62V-3.63V IO Voltage 3.7mA typical dynamic pow
5、er consumption 18uA typical power consumption in finger detect mode 10uA power consumption in power down mode 2. Architecture Microarray Microelectronics Corp., LTD AFS120 3. SPI Timing 3.1. Mode CMD 3.2. Register R/W CMD: CMD + DATA_DOWN + DATA_UP(old) + DATA_UP(new) 3.3. Read Image CMD: CMD + DUMM
6、Y + DATA_UP * n 4. SPI CMDs Production Code, Register R/W CMD(read only) CMD Function Description 0x00 Production Code 1st Byte 0x41, ASIIA, area sensor Production Code AFS120, 120x120 pixel matrix, A120 0x04 Production Code 2nd Byte 0x78, 120, AFS120 0x08 Company Code 1st Byte ASIIM, 0x4d Company C
7、ode MA is short for “MicorArray” Microarray Microelectronics Corp., LTD AFS120 0x0C Company Code 2nd Byte ASIIA, 0x41 Mode, Mode CMD CMD Function Description 0x88 Capture Mode Read Image in Capture Mode; 0x84 Detect Mode Detect finger in Detect Mode; 0x8c Reset Enter Capture Mode after Reset; 0x80 P
8、ower Down Mode Leave Power Down mode by Reset. Read Image, Read Image CMD CMD Parameter Function Description 0x70 1Byte Dummy 120 Byte Data Dummy Read 1 line Sense 1 line Read 1 Line stored in buf1; In the same time, Sense 1 Line and store in buf0; After read Each reset will set IO_INT; See detailed
9、 “Finger Detect” in 0x4x registers Microarray Microelectronics Corp., LTD AFS120 2:0 N/A Current Line, Register R/W CMD CMD Parameter Function Description 0x50 R/W 1Byte Dummy 1Byte Parameter Default 0x00 Current Line The ID of the line captured in next Read Line CMD. Setting, Register R/W CMD CMD P
10、arameter Function Description 0x10 R/W 1 Byte Dummy 1 Byte Parameter Enable Default = 0x00 7 Grey Expansion En 6 Finger Detect En 5 Window En 4 CurLine Set En 3:0 reserved See Grey Expansion in 0x2x registers; See Finger Detect in 0x4x registers; See Window in 0x3x registers; When CurLine Set disabl
11、e, 0x50 is read only. 0x14 R/W 1 Byte Dummy 1 Byte Parameter Ref Voltage Default = 0x10 7:6 reserved 5:0 Vref 0x00: lowest 0x3f: highest 0x18 R/W 1 Byte Dummy 1 Byte Parameter Ref Capacity Default = 0x10 7:4 reserved 3:0 Cref 0x00: max 0x0f: min 0x1c R/W 1 Byte Dummy 1 Byte Parameter Period Default
12、= 0x0f 7:4 N/A 3:0 Period Finger Detect once in 1 period under Detect Mode: 0x0 1*64 Clk4KHz 0x1 2*64 Clk4KHz 0xf 16*64 Clk4KHz Microarray Microelectronics Corp., LTD AFS120 Grey Expansion, Register R/W CMD CMD Parameter Function Description 0x28 1 Byte Dummy 1 Byte Parameter Offset Default = 0x00 u
13、nit(8) Mid = 255 - ( Ori Offset ) / Step; Mid = min(Mid, 0xff); Mid = max(Mid, 0x00). 0x2c 1 Byte Dummy 1 Byte Parameter Step Default = 0x10 Fixed(4.4) Auto Line Select, Register R/W CMD CMD Parameter Function Description 0x30 R/W 1Byte Dummy 1Byte Parameter Default 0x00 Start line Automate update C
14、urrent Line after each Read Line CMD: If CurrentLn + Step = endLn CurrentLn = CurrentLn + Step Else Current = StartLn 0x34 R/W 1Byte Dummy 1Byte Parameter Default 0xFF End line 0x38 R/W 1Byte Dummy 1Byte Parameter Default 0x01 Line Step Finger Detect, Register R/W CMD CMD Parameter Function Descript
15、ion 0x40 R/W 1 Byte Dummy 1 Byte Parameter Detect Parameter T Default = 0x00 Int(8) Threshold Cross: If the amount of “greater-than-T grey value” of pixels is greater than C, send a finger detect Interrupt. 0x44 R/W 1 Byte Dummy 1 Byte Parameter Detect Parameter C Default = 0x00 Int(8) * 4 Microarray Microelectronics Corp., LTD AFS120 5. Package Mechanical Drawing and Package Dimension 6. Module Reference Circuit Higher thickness of surface medium needs higher version of reference circuit 6.1 Version 1.0 Microarray Microelectronics Corp., LTD AFS120 6.2 Version 2.0 6.3 Version 2.1 AFS120 7.
