参数资料
型号: MAX7313ATG+
厂商: Maxim Integrated Products
文件页数: 10/26页
文件大小: 0K
描述: IC I/O EXPANDER I2C 16B 24TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 75
接口: I²C
输入/输出数: 16
中断输出:
频率 - 时钟: 400kHz
电源电压: 2 V ~ 3.6 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-TQFN-EP(4x4)
包装: 管件
MAX7313
16-Port I/O Expander with LED Intensity
Control, Interrupt, and Hot-Insertion Protection
18
______________________________________________________________________________________
Table 10. PWM Application Scenarios
APPLICATION
RECOMMENDED CONFIGURATION
All outputs static without PWM
Set the master, O16 intensity register 0x0E to any value 0x00 to 0x0F.
The global intensity G bit in the configuration register is don't care.
The output intensity registers 0x10 through 0x17 are don't care.
A mix of static and PWM outputs, with PWM
outputs using different PWM settings
Set the master, O16 intensity register 0x0E to any value from 0x10 to 0xFF.
Clear global intensity G bit to 0 in the configuration register to disable global intensity
control.
For the static outputs, set the output intensity value to 0xF.
For the PWM outputs, set the output intensity value in the range 0x0 to 0xE.
A mix of static and PWM outputs, with PWM
outputs all using the same PWM setting
As above. Global intensity control cannot be used with a mix of static and PWM
outputs, so write the individual intensity registers with the same PWM value.
All outputs PWM using the same PWM
setting
Set the master, O16 intensity register 0x0E to any value except from 0x10 to 0xFF.
Set global intensity G bit to 1 in the configuration register to enable global intensity
control.
The master, O16 intensity register 0x0E is the only intensity register used.
The output intensity registers 0x10 through 0x17 are don't care.
Figure 11. PWM Timing
ONE PWM PERIOD IS 240 CYCLES OF THE 32kHz PWM
OSCILLATOR. A PWM PERIOD CONTAINS 15 MASTER
INTENSITY TIMESLOTS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
14
15
1
2
EACH MASTER INTENSITY
TIMESLOT CONTAINS 16
PWM CYCLES
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
15 16
1
2
Figure 12. Master Set to 1/15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
14
15
2
1
.
Figure 14. Master Set to 15/15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
14
15
2
1
.
Figure 13. Master Set to 14/15
1
2
3
4
5
6
7
8
9 10 11 12 13 14
15
14
15
2
1
.
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