参数资料
型号: 73S1215F-44IMR/F
厂商: Maxim Integrated Products
文件页数: 90/136页
文件大小: 0K
描述: IC SMART CARD READER 44-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: 73S12xx
核心处理器: 80515
芯体尺寸: 8-位
速度: 24MHz
连通性: I²C,智能卡,UART/USART,USB
外围设备: LED,POR,WDT
输入/输出数: 9
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-VFQFN 裸露焊盘
包装: 带卷 (TR)
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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