参数资料
| 型号： | P87C52X2FN,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 49/62页 |
| 文件大小： | 0K |
| 描述： | IC 80C51 MCU 256 RAM 40DIP |
| 产品培训模块： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 标准包装： | 9 |
| 系列： | 87C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 33MHz |
| 连通性： | EBI/EMI，UART/USART |
| 外围设备： | POR |
| 输入/输出数： | 32 |
| 程序存储器容量： | 8KB（8K x 8） |
| 程序存储器类型： | OTP |
| RAM 容量： | 256 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： | 40-DIP（0.600"，15.24mm） |
| 包装： | 管件 |
| 其它名称： | 568-7912-5 568-7912-5-ND 568-8361-5 935269602112 P87C52X2FN P87C52X2FN,112-ND P87C52X2FN-ND |
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Philips Semiconductors
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
2003 Jan 24
53
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 11) 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 (87C51), or 32 bytes (87C52/4) of encryption array are
initially unprogrammed (all 1s).
Table 11. Program Security Bits
PROGRAM LOCK BITS1, 2
SB1
SB2
PROTECTION DESCRIPTION
1
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.
80C51X2 ROM CODE SUBMISSION
When submitting a ROM code for the 80C51X2, the following must be specified:
1. 4 kbyte 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:
When programmed, this bit has two effects on masked ROM parts:
1. External MOVC is disabled, and
2. EA is latched on Reset.
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:
V Enabled
V Disabled
Security Bit #2:
V Enabled
V Disabled
Encryption:
V No
V Yes
If Yes, must send key file.
80C52X2 ROM CODE SUBMISSION
When submitting a ROM code for the 80C52X2, the following must be specified:
1. 8 kbyte user ROM data
2. 64 byte ROM encryption key
3. ROM security bits.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| P87C54 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述: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 |
| P87C541 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| P87C54-1 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER |
| P87C541 S F76 | 制造商:Intel 功能描述:MCU 8-bit MCS51 8051 CISC 16KB EPROM 5V 40-Pin PDIP |
| P87C54-2 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER |
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