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TSC80251G2D-24CB 参数 Datasheet PDF下载

TSC80251G2D-24CB图片预览
型号: TSC80251G2D-24CB
PDF下载: 下载PDF文件 查看货源
内容描述: 8位/ 16位微控制器,串行通信接口 [8/16-bit Microcontroller with Serial Communication Interfaces]
分类和应用: 微控制器外围集成电路异步传输模式ATM通信时钟
文件页数/大小: 63 页 / 813 K
品牌: TEMIC [ TEMIC SEMICONDUCTORS ]
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TSC80251G2D  
8.3 Signature Bytes  
The TSC80251G2D derivatives contain factory-programmed Signature Bytes. These bytes are located in non-volatile  
memory outside the memory address space at 30h, 31h, 60h and 61h. To read the Signature Bytes, perform the  
procedure described in section 8.5, using the verify signature mode (see Table 39). Signature byte values are listed  
in Table 37.  
Table 37. Signature Bytes (Electronic ID)  
Signature Address  
Signature Data  
Vendor  
TEMIC  
30h  
31h  
58h  
40h  
F7h  
77h  
FDh  
Architecture  
C251  
32 Kbytes EPROM or OTPROM  
32 Kbytes MaskROM or ROMless  
TSC80251G2D derivative  
Memory  
Revision  
60h  
61h  
8.4 Programming Algorithm  
Figure 9 shows the hardware setup needed to program the TSC87251G2D EPROM/OTPROM areas:  
The chip has to be put under reset and maintained in this state until the completion of the programming sequence.  
PSEN# and the other control signals (ALE and Port 0) have to be set to a high level.  
Then PSEN# has to be to forced to a low level after two clock cycles or more and it has to be maintained in  
this state until the completion of the programming sequence (see below).  
The voltage on the EA# pin must be set to V  
.
DD  
The programming mode is selected according to the code applied on Port 0 (see Table 38). It has to be applied  
until the completion of this programming operation.  
The programming address is applied on Ports 1 and 3 which are respectively the Most Significant Byte (MSB)  
and the Least Significant Byte (LSB) of the address.  
The programming data are applied on Port 2.  
The EPROM Programming is done by raising the voltage on the EA# pin to V , then by generating a low  
PP  
level pulse on ALE/PROG# pin.  
The voltage on the EA# pin must be lowered to V  
before completing the programming operation.  
DD  
It is possible to alternate programming and verifying operation (See Paragraph 8.5). Please make sure the  
voltage on the EA# pin has actually been lowered to V before performing the verifying operation.  
DD  
PSEN# and the other control signals have to be released to complete a sequence of programming operations  
or a sequence of programming and verifying operations.  
Rev. A - May 7, 1999  
30  
 
 
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