IS31SE5104
Integrated Silicon Solution, Inc. – www.issi.com 8
Rev. C, 08/05/2015
Table 2 Register Function
Address Name Function Table Default
00h Configuration Register Set software shutdown mode and sensitivity
3
0000 0000
01h Channel Control Register Set the 4 channels enable
4
1111 1111
02h State Register 1 Store state of action for 4 channels 5
0000 0000
03h State Register 2 Show state of 4 channels changes or not 6
04h Interrupt Register
Set interrupt function 7
Table 3 00h Configuration Register
Bit D7 D6:D5 D4:D0
Name
SSD SS -
Default 0 00 00000
The Configuration Register sets software shutdown
mode and sensitivity.
SSD Software Shutdown Enable
0 Normal operation
1 Software shutdown mode
SS Sensitivity Selection
00 Normal sensitivity
01 High sensitivity
10 Low sensitivity
11 Not a valid state
Table 4 01h Channel Control Register
Bit
D7:D4 D3:D0
Name
- CH4: CH1
Default
1111 1111
The Channel Control Register sets the 4 channels
enable.
CHx Channel Enable
0 Disable
1 Enable
Table 5 02h State Register 1 (Read only)
Bit
D7:D4 D3:D0
Name
- AS4: AS1
Default
0000 0000
The State Register 1 stores state of action for 4
channels.
ASx Action State Bit
0 Button released
1 Button pressed
Table 6 03h State Register 2 (Read only)
Bit
D7:D4 D3:D0
Name
- SC4: SC1
Default
0000 0000
The State Register 2 shows state of 4 channels
changes or not.
SCx State Change Bit
0 No state change
1 Button touched or released event occurs
Table 7 04h Interrupt Register
Bit D7:D6 D5:D0
Name ACI -
Default 00 000000
The Interrupt Register sets interrupt function.
ACI Automatically Clear Interrupt
00 No auto clear
01 Auto clear after 8ms
10 Auto clear after 32ms
11 Not a valid state
