參數(shù)資料
型號(hào)： P80C31X2BN
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz
中文描述： 8-BIT, 33 MHz, MICROCONTROLLER, PDIP40
封裝： 0.600 INCH, PLASTIC, MO-015, SOT-129-1, DIP-40
文件頁(yè)數(shù)： 33/38頁(yè)
文件大?。?/td> 350K
代理商： P80C31X2BN
Philips Semiconductors
Product specification
80C51/87C51/80C31
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
2000 Jan 20
33
MASK ROM DEVICES
Security Bits
With none of the security bits programmed the code in the program
memory can be verified. If the encryption table is programmed, the
code will be encrypted when verified. When only security bit 1 (see
Table 10) is programmed, MOVC instructions executed from
external program memory are disabled from fetching code bytes
from the internal memory, EA is latched on Reset and all further
programming of the EPROM is disabled. When security bits 1 and 2
are programmed, in addition to the above, verify mode is disabled.
Encryption Array
64 bytes of encryption array are initially unprogrammed (all 1s).
Table 10. Program Security Bits
PROGRAM LOCK BITS
1, 2
SB1
SB2
PROTECTION DESCRIPTION
1
U
U
No Program Security features enabled.
(Code verify will still be encrypted by the Encryption Array if programmed.)
2
P
U
MOVC instructions executed from external program memory are disabled from fetching code bytes from
internal memory, EA is sampled and latched on Reset, and further programming of the EPROM is disabled.
NOTES:
1. P – programmed. U – unprogrammed.
2. Any other combination of the security bits is not defined.
ROM CODE SUBMISSION
When submitting ROM code for the 80C51, the following must be specified:
1. 4k byte user ROM data
2. 64 byte ROM encryption key
3. ROM security bits.
ADDRESS
CONTENT
BIT(S)
COMMENT
0000H to 0FFFH
DATA
7:0
User ROM Data
1000H to 103FH
KEY
7:0
ROM Encryption Key
1040H
SEC
0
ROM Security Bit 1
1040H
SEC
1
ROM Security Bit 2
Security Bit 1:
1. External MOVC is disabled, and
2. EA is latched on Reset.
When programmed, this bit has two effects on masked ROM parts:
Security Bit 2:
When programmed, this bit inhibits Verify User ROM.
NOTE:
Security Bit 2 cannot be enabled unless Security Bit 1 is enabled.
If the ROM Code file does not include the options, the following information must be included with the ROM code.
For each of the following, check the appropriate box, and send to Philips along with the code:
Security Bit #1:
Enabled
Disabled
Security Bit #2:
Enabled
Disabled
Encryption:
No
Yes
If Yes, must send key file.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P80C31X2BN,112 功能描述:8位微控制器 -MCU 80C51 128B 12/6 CLKS RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
P80C32 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:CMOS 0 to 44 MHz Single Chip 8?bit Microntroller
P80C321 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:CMOS SINGLE CHIP MICROCONTROLLER
P80C32-1 制造商:Intel 功能描述:MicroController, 8-Bit, 40 Pin, Plastic, DIP
P80C321-1 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:CMOS SINGLE CHIP MICROCONTROLLER
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