AD7877 Analog Devices, AD7877 Datasheet - Page 37

• Manufacturer Part Number: AD7877
• Description: Touch Screen Controller
• Manufacturer: Analog Devices

Specifications of AD7877

• Resolution (bits): 12bit
• # Chan: 9
• Sample Rate: 125kSPS
• Interface: Ser
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni 2.5V
• Adc Architecture: SAR
• Pkg Type: CSP

Data Sheet
Register Name: Alert Status/Enable Register
Write Address:
Read Address:
Default Value:
Type:
Table 18.
Bit
0
1
2
3
4
5
6
7
8
9
10
11
Register Name: AUX1 High Limit
Write Address:
Read Address:
Default Value:
Type:
This register contains the 12-bit high limit for Auxiliary Input 1.
Register Name: AUX1 Low Limit
Write Address:
Read Address:
Default Value:
Type:
This register contains the 12-bit low limit for Auxiliary Input 1.
Register Name: BAT1 High Limit
Write Address:
Read Address:
Default Value:
Type:
This register contains the 12-bit high limit for Battery
Monitoring Input 1.
Name
AUX1LO
BAT1LO
BAT2LO
TEMP1LO
AUX1HI
BAT1HI
BAT2HI
TEMP1HI
AUX1EN
BAT1EN
BAT2EN
TEMP1EN
0011
00011
0x000
Read/write
0100
00100
0x000
Read/write
0101
00101
0x000
Read/write
0110
00110
0x000
Read/write
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
When this bit is 1, the AUX1 channel is below its low limit
When this bit is 1, the BAT1 channel is below its low limit
When this bit is 1, the BAT2 channel is below its low limit
When this bit is 1, the TEMP1 channel is above its low limit
When this bit is 1, the AUX1 channel is above its high limit
When this bit is 1, the BAT1 channel is above its high limit
When this bit is 1, the BAT2 channel is above its high limit
When this bit is 1, the TEMP1 channel is below its high limit
Setting this bit enables AUX1 as an interrupt source to the ALERT output
Setting this bit enables BAT1 as an interrupt source to the ALERT output
Setting this bit enables BAT2 as an interrupt source to the ALERT output
Setting this bit enables TEMP1 as an interrupt source to the ALERT output
Rev. D | Page 37 of 44
Register Name: BAT1 Low Limit
Write Address:
Read Address:
Default Value:
Type:
This register contains the 12-bit low limit for Battery
Monitoring Input 1.
Register Name: BAT2 High Limit
Write Address:
Read Address:
Default Value:
Type:
This register contains the 12-bit high limit for Battery
Monitoring Input 2.
0111
00111
0x000
Read/write
1000
01000
0x000
Read/write
AD7877