參數(shù)資料
型號(hào)： SAB83C515A-5N18-T3
廠商： SIEMENS A G
元件分類： 微控制器/微處理器
英文描述： 8-Bit CMOS Single-Chip Microcontroller
中文描述： 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQCC68
封裝： PLASTIC, LCC-68
文件頁(yè)數(shù)： 14/57頁(yè)
文件大小： 899K
代理商： SAB83C515A-5N18-T3
SAB 80C515A/83C515A-5
Semiconductor Group
13
Program Memory ('Code Space')
The SAB 83C515A-5 has 32 Kbyte of on-chip ROM, while the SAB 80C515A has no internal
ROM. The program memory can externally be expanded up to 64 Kbyte. Pin EA determines
whether program fetches below address 8000
H
are done from internal or external memory.
As a new feature the SAB 83C515A-5 offers the possibility of protecting the internal ROM
against unauthorized access. This protection is implemented in the ROM-Mask. Therefore, the
decision ROM-Protection 'yes' or 'no' has to be made when delivering the ROM-Code. Once
enabled, there is no way of disabling the ROM-Protection.
Effect:
The access to internal ROM done by an externally fetched MOVC instruction is
disabled. Nevertheless, an access from internal ROM to external ROM is possible.
To verify the read protected ROM-Code a special ROM-Verify-Mode is implemented. This
mode also can be used to verify unprotected internal ROM.
ROM -Protection
ROM-Verification Mode
(see 'AC Characteristics')
Restrictions
no
ROM-Verification Mode 1
(standard 8051 Verification Mode)
ROM-Verification Mode 2
–
yes
ROM-Verification Mode 2
– standard 8051
Verification Mode is
disabled
– externally applied MOVC
accessing internal ROM
is disabled
相關(guān)PDF資料
PDF描述
SAB83C515A-5 8-Bit CMOS Single-Chip Microcontroller
SAB80C515A-N18 8-Bit CMOS Single-Chip Microcontroller
SAB80C515A-N18-T3 8-Bit CMOS Single-Chip Microcontroller
SAB80C517A-M18 8-Bit CMOS Single-Chip Microcontroller
SAB80C517A 8-Bit CMOS Single-Chip Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAB83C517A-5 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
SAB83C517A-5N18 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
SAB83C517A-5N18-T3 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
SAB83C517A-5N18-T4 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
SAB83C517A-N18-T4 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
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