参数资料
型号: 73S1215F-EB-LITE
厂商: Maxim Integrated Products
文件页数: 90/136页
文件大小: 0K
描述: BOARD EVAL 73S1215F CBL/DOC/CD
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
系列: *
DS_1215F_003
73S1215F Data Sheet
Rev. 1.4
57
1.7.10 LED Drivers
The 73S1215F F provides four dedicated output pins for driving LEDs. The LED driver pins can be
configured as current sources that will pull to ground to drive LEDs that are connected to VDD without the
need for external current limiting resistors. These pins may be used as general purpose outputs with the
programmed pull-down current and a strong (CMOS) pull-up, if enabled. The analog block must be
enabled when these outputs are being used to drive the selected output current.
The pins can be used as inputs with consideration of the programmed output current and level. The
register bit when read, indicates the state of the pin.
LED Control Register (LEDCtl): 0xFFF3
0xFF
Table 62: The LEDCtl Register
MSB
LSB
LPUEN ISET.1
ISET.0 LEDD3 LEDD2 LEDD 1 LEDD0
Bit
Symbol
Function
LEDCtl.7
LEDCtl.6
LPUEN
0 = Pull-up is enabled for the LED pin.
LEDCtl.5
ISET.1
These two bits control the drive current (to ground) for all of the LED driver
pins. Current levels are:
00 = 0ma(off)
01 = 2ma
10 = 4ma
11 = 10ma
LEDCtl.4
ISET.0
LEDCtl.3
LEDD3
Write data controls output level of pin LED3. Read will report level of pin LED3.
LEDCtl.2
LEDD2
Write data controls output level of pin LED2. Read will report level of pin LED2.
LEDCtl.1
LEDD1
Write data controls output level of pin LED1. Read will report level of pin LED1.
LEDCtl.0
LEDD0
Write data controls output level of pin LED0. Read will report level of pin LED0.
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