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EPC110 参数 Datasheet PDF下载

EPC110图片预览
型号: EPC110
PDF下载: 下载PDF文件 查看货源
内容描述: 完全集成的可配置的光障的驱动程序和接收器 [Fully integrated configurable light barrier driver & receiver]
分类和应用: 驱动
文件页数/大小: 27 页 / 588 K
品牌: EPC [ ESPROS PHOTONICS CORP ]
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epc110  
Parameters  
The parameters are defining the functionality of the epc110. The big variety of possible settings allows to cover a wide range of applications.  
The devices contains a memory to store the application parameters. They are stored into 16bit registers. The registers are organized into  
2 blocks: a volatile and a non-volatile one.  
Parameter Memory Organization (epc110)  
The following classes of data are stored for each device:  
Application parameters  
Unique chip ID and chip adjustments (factory set)  
This data can be permanently stored in a read-only memory (ROM)1 and is mirrored in a volatile memory (RAM). At power up, the data  
(except the chip ID) is copied from the ROM to the RAM. During operation, the data from the RAM is used. Both memories are organized in  
16 registers at 16 bits each. The data can be accessed on a 16-bit register base.  
If a register has been burned (=stored into the ROM) the first bit is set: FUSEBIT = 1. If VMOD = 1 is selected, the register cannot be modified  
any more nor in RAM nor in ROM area. For VMOD = 0 the RAM area is still accessible.  
So far the chip can be operated in two different modes:  
Fix-parameter mode VMOD = 1: e.g. as standalone or pre-configured device  
Operated with not modifiable data from RAM, which are stored permanently in ROM.  
Dynamic mode VMOD = 0: e.g. for adaptive systems, dynamic systems  
Operated with modifiable data from RAM. The SPI interface allows to modify these data in the RAM area at any time on the fly.  
At power up these data are loaded from the permanent stored data in the ROM. If the run-time configuration differs from the data set  
stored in the ROM, it has to be restored after each power-up again by the external micro-processor over the SPI interface.  
The following table shows the memory organization:  
Non-Volatile Memory Address Range Volatile Memory Address Range Description  
(Register no.)  
(Register no.)  
0 - 3  
4 - 6  
7
16 - 19  
20 - 22  
23  
Application parameters  
Trim values, factory set  
Device Address (not applicable)  
Chip ID, factory set  
8 - 15  
-
-
24 - 31  
For factory test purpose. Read only.  
Table 3: Memory map overview  
As shown in the table above, registers 0 – 3 are used for configuring the chip in the application. Before the devices can be used in a final light-  
barrier system, the required application parameters of the chip in the system have to be stored into the device memory.  
The following table shows the allocation of the available parameters in the memory of the epc110:  
Bit #  
15  
VMODE  
0
14  
13  
MODE  
0
12  
0
11  
1
10  
0
9
0
1
8
7
6
0
5
0
4
3
2
1
0
ROM RAM  
0
0
0
0
0
1
TPULSE  
POL FUSEBIT  
0
0
1
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
TPER  
0
DEC  
INC  
SENSH  
0
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
FUSEBIT  
Application  
parameters  
1
0
SENSN  
2
don't use  
don't use  
don't use  
don't use  
don't use  
Lot no. LSB  
Lot no. MSB  
Chip ID  
Factory use only  
Revision no.  
no function  
no function  
no function  
3
4
5
Trimming  
6
7
Device Address  
8
9
10  
11  
12  
13  
14  
15  
Chip ID  
Figure 12: Detailed memory map epc110  
1 The non-volatile memory is a one-time-programmable memory (OTP). Once the memory is programmed, the programmed values cannot be  
overwritten anymore.  
© 2011 ESPROS Photonics Corporation  
Characteristics subject to change without notice  
11  
Datasheet epc110 - V2.1  
www.espros.ch  
 
 
 
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