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参数资料
| 型号： | TCA8418EYFPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, BGA25 |
| 封装： | 2 X 2 MM, 0.40 MM PITCH, DSBGA-25 |
| 文件页数： | 8/31页 |
| 文件大小： | 400K |
| 代理商： | TCA8418EYFPR |
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SCPS222B – MAY 2010 – REVISED SEPTEMBER 2010
www.ti.com
BIT
NAME
DESCRIPTION
Key events interrupt enable to host processor
0
KE_IEN
0 = disabled
1 = enabled Can be used to mask interrupts
Bit 7 in this register is used to determine the programming mode. If it is low, all data bytes are written to the
registers defined command byte. If bit 7 is high, the value of the command byte is automatically incremented
after the byte is written, and the next data byte is stored in the corresponding register. Registers are written in
the sequence shown in Table 4. Once the GPIO_PULL3 register (0×2E) is written to, the command byte returns
to 0 (Configuration register). Registers 0 and 2F are reserved and a command byte that references these
registers is not acknowledged by the TCA8418E.
The keypad lock interrupt enable determines if the interrupt pin is asserted when the key lock interrupt (see
Interrupt Status Register) bit is set.
Interrupt Status Register, INT_STAT (Address 0×02)
BIT
NAME
DESCRIPTION
7
N/A
Always 0
6
N/A
Always 0
5
N/A
Always 0
CTRL-ALT-DEL key sequence status. Requires writing a 1 to clear interrupts.
4
CAD_INT
0 = interrupt not detected
1 = interrupt detected
Overflow interrupt status. Requires writing a 1 to clear interrupts.
3
OVR_FLOW_INT
0 = interrupt not detected
1 = interrupt detected
Keypad lock interrupt status. This is the interrupt to the processor when the keypad lock
sequence is started. Requires writing a 1 to clear interrupts.
2
K_LCK_INT
0 = interrupt not detected
1 = interrupt detected
GPI interrupt status. Requires writing a 1 to clear interrupts.
0 = interrupt not detected
1
GPI_INT
1 = interrupt detected
Can be used to mask interrupts
Key events interrupt status. Requires writing a 1 to clear interrupts.
0
K_INT
0 = interrupt not detected
1 = interrupt detected
Key Lock and Event Counter Register, KEY_LCK_EC (Address 0×03)
BIT
NAME
DESCRIPTION
7
N/A
Always 0
Key lock enable
6
K_LCK_EN
0 = disabled
1 = enabled
Keypad lock status
5
LCK2
0 = unlock (if LCK1 is 0 too)
1 = locked (if LCK1 is 1 too)
Keypad lock status
4
LCK1
0 = unlock (if LCK2 is 0 too)
1 = locked (if LCK2 is 1 too)
3
KEC3
Key event count, Bit 3
16
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TCA8418E
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相关代理商/技术参数 |
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|---|---|
| TCA8418EYFPR | 制造商:Texas Instruments 功能描述:IC I2C CONTROLLED KEYPAD SCAN 3.6V 25 |
| TCA8418RTWR | 功能描述:I2C 接口集成电路 Low-Vltg 16B I2C & SMBus I/O Expander RoHS:否 制造商:NXP Semiconductors 电源电压-最大:5.5 V 电源电压-最小:2.3 V 最大工作频率:400 KHz 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-16 |
| TCA8418YFPR | 制造商:TI 制造商全称:Texas Instruments 功能描述:I2C CONTROLLED KEYPAD SCAN IC WITH INTEGRATED ESD PROTECTION |
| TCA8424 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Check for Samples: TCA8424 |
| TCA8424EVM-038 | 功能描述:界面开发工具 TCA8424 EVAL MOD RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
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