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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： | 5/31页 |
| 文件大小： | 400K |
| 代理商： | TCA8418EYFPR |
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www.ti.com
SCPS222B – MAY 2010 – REVISED SEPTEMBER 2010
Table 3.
BIT
BYTE
7 (MSB)
6
5
4
3
2
1
0 (LSB)
I2C slave address
0
1
0
1
0
R/W
The last bit of the slave address defines the operation (read or write) to be performed. A high (1) selects a read
operation, while a low (0) selects a write operation.
Control Register and Command Byte
Following the successful acknowledgment of the address byte, the bus master sends a command byte, which is
stored in the control register in the TCA8418E. The command byte indicates the register that will be updated with
information. All registers can be read and written to by the system master.
Table 4 shows all the registers within this device and their descriptions. The default value in all registers is 0.
Table 4. Register Descriptions
REGISTER
ADDRESS
REGISTER NAME
7
6
5
4
3
2
1
0
DESCRIPTION
0×00
Reserved
Configuration register
OVR_F
GPI_E_
OVR_FL
INT_
K_LC
GPI_IE
0×01
CFG
(interrupt processor
AI
LOW_I
KE_IEN
CGF
OW_M
CFG
K_IEN
N
interrupt enables)
EN
OVR_F
N/A
K_LC
GPI_
0×02
INT_STAT
Interrupt status register
N/A 0
LOW_I
K_ INT
0
K_INT
INT
NT
Key lock and event
N/A
K_LCK
KLEC
0×03
KEY_LCK_EC
LCK2
LCK1
KLEC3
KLEC1
KLEC0
counter register
0
_EN
2
KEA7
KEA6
KEA5
KEA4
KEA3
KEA2
KEA1
KEA0
0×04
KEY_EVENT_A
Key event register A
0
KEB7
KEB6
KEB5
KEB4
KEB3
KEB2
KEB1
KEB0
0×05
KEY_EVENT_B
Key event register B
0
KEC7
KEC6
KEC5
KEC4
KEC3
KEC2
KEC1
KEC0
0×06
KEY_EVENT_C
Key event register C
0
KED7
KED6
KED5
KED4
KED3
KED2
KED1
KED0
0×07
KEY_EVENT_D
Key event register D
0
KEE7
KEE6
KEE5
KEE4
KEE3
KEE2
KEE1
KEE0
0×08
KEY_EVENT_E
Key event register E
0
KEF7
KEF6
KEF5
KEF4
KEF3
KEF2
KEF1
KEF0
0×09
KEY_EVENT_F
Key event register F
0
KEG7
KEG6
KEG5
KEG4
KEG3
KEG2
KEG1
KEG0
0×0A
KEY_EVENT_G
Key event register G
0
KEH7
KEH6
KEH5
KEH4
KEH3
KEH2
KEH1
KEH0
0×0B
KEY_EVENT_H
Key event register H
0
KEI7
KEI6
KEI5
KEI4
KEI3
KEI2
KEI1
KEI0
0×0C
KEY_EVENT_I
Key event register I
0
KEJ7
KEJ6
KEJ5
KEJ64
KEJ3
KEJ2
KEJ1
KEJ0
0×0D
KEY_EVENT_J
Key event register J
0
Keypad lock 1 to lock 2
0×0E
KP_LCK_TIMER
KL7
KL6
KL5
KL4
KL3
KL2
KL1
KL0
timer
UK1_
0×0F
Unlock1
Unlock key 1
UK1_7
UK1_6
UK1_5
UK1_4
UK1_3
UK1_1
UK1_0
2
UK2_
0×10
Unlock2
Unlock key2
UK2_7
UK2_6
UK2_5
UK2_4
UK2_3
UK2_1
UK2_0
2
R7IS
R6IS
R5IS
R4IS
R3IS
R2IS
R1IS
R0IS
0×11
GPIO_INT_STAT1
GPIO interrupt status
0
C7IS
C6IS
C5IS
C4IS
C3IS
C2IS
C1IS
C0IS
0×12
GPIO_INT_STAT2
GPIO interrupt status
0
Copyright 2010, Texas Instruments Incorporated
13
Product Folder Link(s): TCA8418E
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