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JSR-164C正方形门禁读卡器芯片各引脚电压值(数字表测量)
P89C52X2BN:具有8位闪存的控制器
引脚号
| 电压值
| 备注
| 引脚号
| 电压值
| 备注
| 1
| 0
|
| 21
| 0
|
| 2
| 4.4
|
| 22
| 4.7
|
| 3
| 0
|
| 23
| 4.7
|
| 4
| 4.7
|
| 24
| 0
|
| 5
| 0
|
| 25
| 0
|
| 6
| 4.5(待机)
| 0.15(刷卡)
| 26
| 4.7
|
| 7
| 4.4
|
| 27
| 0
|
| 8
| 4.7(待机)
| 0(刷卡)
| 28
| 4.7
|
| 9
| 0
|
| 29
| 4.7
|
| 10
| 4.7
|
| 30
| 1.5
|
| 11
| 4.5
|
| 31
| 4.6
|
| 12
| 4.7
|
| 32
| 4.7
|
| 13
| 0.2-4.4(待机)
| 0(刷卡)
| 33
| 4.7
|
| 14
| 4.7
|
| 34
| 4.7
|
| 15
| 4.7
|
| 35
| 4.6
|
| 16
| 4.7
|
| 36
| 4.6
|
| 17
| 4.7
|
| 37
| 4.7
|
| 18
| 2.2
| 晶振
| 38
| 4.7
|
| 19
| 2
| 晶振
| 39
| 4.7
|
| 20
| 0
|
| 401
| 4.7
|
|
MFRC500:1443标准读卡芯片
引脚号
| 电压值
| 备注
| 引脚号
| 电压值
| 备注
| 1
| 4.7
|
| 17
| 0
|
| 2
| 4.7
|
| 18
| 0
|
| 3
| 4.7
|
| 19
| 4.7
|
| 4
| 4.6
|
| 20
| 0
|
| 5
| 4.7
|
| 21
| 0.1
|
| 6
| 4.6
|
| 22
| 0
|
| 7
| 4.6
|
| 23
| 0.1
|
| 8
| 4.7
|
| 24
| 1.2
|
| 9
| 4.7
|
| 25
| 0
|
| 10
| 0
|
| 26
| 0
|
| 11
| 0
|
| 27
| 0
|
| 12
| 4.7
|
| 28
| 0
|
| 13
| 4.7
|
| 29
| 4.7
|
| 14
| 0
|
| 30
| 4.7
|
| 15
| 0
|
| 31
| 4.6
|
| 16
| 0
|
| 32
| 4.7
|
| DS1302:带RAM的实时时钟芯片
引脚号
| 电压值
| 备注
| 引脚号
| 电压值
| 备注
| 1
| 4.7
| VCC2
| 5
| 0
| RST
| 2
| 0
| 晶振
| 6
| 4.4
| I/O
| 3
| 1.8
| 晶振
| 7
| 0
| SCLK
| 4
| 0
| GND
| 8
| 0.34
| VCC1
|
X5045P:EEPROM“看门狗”芯片
引脚号
| 电压值
| 备注
| 引脚号
| 电压值
| 备注
| 1
| 4.4
| CS(L)
| 5
| 4.7
| SI
| 2
| 4.7
| SO
| 6
| 4.7
| SCK
| 3
| 0
| WP
| 7
| 0
| RSET(L)
| 4
| 0
| VSS
| 8
| 4.7
| VCC
|
65LBC184:485差分总线收发器
引脚号
| 电压值
| 备注
| 引脚号
| 电压值
| 备注
| 1
| 0
| A0
| 5
| 0
| SDA
| 2
| 0
| A1
| 6
| 3.3
| SCL
| 3
| 0
| A2
| 7
| 0.9
| WP
| 4
| 4.5
| GND
| 8
| 4.7
| VCC
|
|