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| 型号： | AT77C105ACB08V |
| 厂商： | Atmel Corp. |
| 英文描述： | FingerChip Thermal Fingerprint Sweep Sensor, Hardware Based Navigation and Click Functions, Extended I/O range(1.8-3.3V) |
| 中文描述： | 热指纹扫描的FingerChip传感器，基于硬件的导航和点击功能，扩展I / O范围（1.8 - 3.3） |
| 文件页数： | 24/39页 |
| 文件大小： | 448K |
| 代理商： | AT77C105ACB08V |
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24
AT77C105A [Preliminary]
5419A–BIOM–01/05
Control Interface (Slow SPI)
This interface controls the sensor’s internal registers. The protocol enables reading and
writing of these registers.
The master (host) initiates transfers to the slave (sensor). The sensor can only use its
interrupt pin to communicate with the host. When the host is interrupted, it must read the
status register before continuing operation.
The word length of the transferred data is fixed to 8 bits. The Most Significant Bit (MSB)
is sent first.
Communication Protocol
Accesses to the host are structured in packets of words. The first word is the command
and the other words are the data.
The b7 bit is used to differentiate the command and data. When the word is a command,
b7 is high (
“
1
”
) and when the word is a piece of data, b7 is low (
“
0
”
).
The following protocol is used:
Command Format
The host indicates to the sensor if it wants to read or write into a register and indicates
the register’s address.
Data Format (Writing into
Register)
If writing into a register, the host transmits the data.
Data Format (Reading of
Register)
If reading a register, the host transmits one or several packets of data and data is shifted
in from the sensor. The host transmits dummy words with the data format (b7 is low
[
“
0
”
]). If reading the navigation or click pixel registers, the host transmits three packets of
data to read the three registers.
Note:
The host cannot communicate with the sensor without receiving data from it. Useless data is ignored by the host.
b7
b6
b5
b4
b3
b2
b1
b0
1
Read
(1)/Write (0)
Address (b3)
Address (b2)
Address (b1)
Address (b0)
x
x
b7
b6
b5
b4
b3
b2
b1
b0
0
Data (b6)
Data (b5)
Data (b4)
Data (b3)
Data (b2)
Data (b1)
Data (b0)
b7
0
b6
x
b5
x
b4
x
b3
x
b2
x
b1
x
b0
x
相关PDF资料 |
PDF描述 |
|---|---|
| AT77C105ACB08V- | FingerChip Thermal Fingerprint Sweep Sensor, Hardware Based Navigation and Click Functions, Extended I/O range(1.8-3.3V) |
| AT77SM0101BCB02VBS | FingerCHIP BIOMETRIC MODULE |
| AT77SM0101BCB02VEK | FingerCHIP BIOMETRIC MODULE |
| AT77SM0101BCB02VKE | RESISTOR, 845, 1%, 100PPM, 1/16W, 0603 SMD |
| AT78C1502 | DVD/CD Servo |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT77C105ACB08V- | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:FingerChip Thermal Fingerprint Sweep Sensor, Hardware Based Navigation and Click Functions, Extended I/O range(1.8-3.3V) |
| AT77SM0101BCB02VBS | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:FingerCHIP BIOMETRIC MODULE |
| AT77SM0101BCB02VEK | 制造商:Atmel Corporation 功能描述:KIT EVALUATION FINGERCHIP |
| AT77SM0101BCB02VKE | 制造商:Atmel Corporation 功能描述:ARM9-BASED FINGERCHIP BIOMETRIC MODULE - Bulk 制造商:Atmel 功能描述:Atmel AT77SM0101BCB02VKE Sensors and Transducers Misc 制造商:Atmel Corporation 功能描述:MODULE FINGERCHIP |
| AT78041 | 制造商:Panasonic Electric Works 功能描述:REAR TERMINAL SOCKET 8 PINS |
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