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參數(shù)資料
| 型號(hào)： | MCRF202 |
| 廠(chǎng)商： | Microchip Technology Inc. |
| 英文描述： | 125 kHz Passive RFID Device with Sensor Input |
| 中文描述： | 的125 kHz無(wú)源RFID器件，傳感器輸入 |
| 文件頁(yè)數(shù)： | 6/20頁(yè) |
| 文件大?。?/td> | 340K |
| 代理商： | MCRF202 |
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MCRF202
DS21308E-page 6
2003 Microchip Technology Inc.
FIGURE 2-3:
PSK DATA MODULATION
2.2.4
The CB12 bit must be a ‘
1
’ for a factory programmed
device.
MEMORY ARRAY LOCK BIT (CB12)
2.3
Memory Section
The device has 128 bits of one-time programmable
(OTP) memory. The user can choose 96 or 128 bits by
selecting the CB1 bit in the configuration register. See
Table 2-1 for more details.
2.3.1
COLUMN AND ROW DECODER
LOGIC AND BIT COUNTER
The column and row decoders address the EEPROM
array at the clock rate and generate a serial data
stream for modulation. This data stream can be up to
128 bits in length. The size of the data stream is user
programmable with CB1 and can be set to 96 or 128
bits. Data lengths of 48 and 64 bits are available by
programming the data twice in the array, end-to-end.
The column and row decoders route the proper voltage
to the array for programming and reading. In the
programming modes, each individual bit is addressed
serially from bit 1 to bit 128.
2.4
Examples of Configuration
Settings
EXAMPLE 2-1:
The “88D” (hex) configuration is interpreted as
follows:
“88D” CONFIGURATION
EXAMPLE 2-2:
The “80A” (hex) configuration is interpreted as
follows:
“80A” CONFIGURATION
P
P
PP
PP
PP
PP
PP
‘
0
’
‘
0
’
‘
1
’
‘
1
’
Encoded Data
(NRZ_L)
PSK_ 1
Change on Data
PSK _2
Change on ‘
1
’
‘
1
’
Referring to Table 2-1, the “88D” configuration
represents:
Modulation = PSK_1
PSK rate = rf/2
Data encoding = NRZ_L (direct)
Baud rate = rf/32 = MOD32
Memory size: 128 bits
Programmed device
“88D”
→
1000-1000-1101
CB12
CB1
The MSB corresponds to CB12 and the LSB
corresponds to CB1 of the configuration register.
Therefore, we have:
Referring to Table 2-1, the “80A” configuration
represents:
Programmed device, FSK protocol, NRZ_L
(direct) encoding, MOD50 (baud rate = rf/50),
96 bits.
CB12=
1
CB8=
0
CB4=
1
CB11=
0
CB7=
0
CB3=
0
CB10=
0
CB6=
0
CB2=
1
CB9=
0
CB5=
0
CB1=
0
“80A”
→
1000-0000-1010
CB12
CB1
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| MCRF202-I/P | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:125 kHz Passive RFID Device with Sensor Input |
| MCRF202-I/S | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:125 kHz Passive RFID Device with Sensor Input |
| MCRF202-I/SB | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:125 kHz Passive RFID Device with Sensor Input |
| MCRF202-I/SN | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:125 kHz Passive RFID Device with Sensor Input |
| MCRF202-I/W | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:125 kHz Passive RFID Device with Sensor Input |
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