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参数资料
| 型号： | P87CL884T |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | TELX microcontrollers for CT0 handset/basestation applications |
| 中文描述： | TELX微控制器CT0手机/基站应用 |
| 文件页数： | 17/32页 |
| 文件大小： | 145K |
| 代理商： | P87CL884T |
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17
Philips Semiconductors
Product specification
TELX microcontrollers for CT0
handset/basestation applications
P8xCL883; P8xCL884
6.6
OTP programming
6.6.1
OTP
PROGRAMMING BY A PROGRAMMER
The 8 kbytes One Time Programmable (OTP) memory
can be programmed by using a programmer (OM4260)
together with a programmer adapter OM5508. Since the
memory is programmable only once, programming an
already programmed address results in a logical AND of
the old and new code. The OTP code can be read out by
the programmer for verification.
6.6.1.1
Signature bytes
The OTP memory contains three signature bytes which
can be read by the programmer to identify the device.
A special address space has been used for these bytes
which does not influence the user address space.
The values of the signature bytes are:
(030H) = 15H, indicates manufactured by Philips
Semiconductors
(031H) = C5H, indicates P8xCL883/P8xCL884
(060H) = 00H, currently not used.
6.6.2
I
N
-S
YSTEM
P
ROGRAMMING MODE
In the In-System Programming mode the OTP can be
programmed under control of the CPU. A program to
control programming has to be available in the OTP. This
mode can be used to program several bytes in the OTP if
the chip is already in a system e.g. to store tuning
parameters.
In the In-System Programming mode the complete
address space OTP can be programmed.
The user should take care not to overwrite the existing
code.
For In-System Programming four SFRs are used to control
the OTP.
Table 9
SFRs for In-System Programming
SFR NAME
DESCRIPTION
OAH
OAL
ODATA
OISYS
OTP Address High Register
OTP Address Low Register
OTP Data Register
OTP In-System Register
6.6.2.1
OTP In-System Programming Register (OISYS)
The OISYS SFR controls the In-System Programming mode. The data that has to be programmed is stored in the SFR
ODATA and the address for this data is held in the SFRs OAH and OAL.
Table 10
OTP In-System Programming Register (SFR address DCH)
Table 11
Description of OISYS bits
7
6
5
4
3
2
1
0
VPon
SEC
SIG
WE
InSysMode
BIT
SYMBOL
VPon
SIG
WE
InSysMode
DESCRIPTION
7 to 5
4
3
2
1
0
These bits are reserved.
V
PP
status (read only).
This bit is reserved.
Signature bytes enable.
Write Enable, enables programming.
In-System Programming status bit.
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相关代理商/技术参数 |
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| P87L42 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:UNIVERSAL PERIPHERAL INTERFACE CHMOS 8-BIT SLAVE MICROCONTROLLER |
| P87LPC759 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low power, low price, low pin count (14 pin) microcontroller with 1 kbyte OTP |
| P87LPC759BN | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low power, low price, low pin count (14 pin) microcontroller with 1 kbyte OTP |
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| P87LPC760BDH | 功能描述:8位微控制器 -MCU 80C51 1K/128 OTP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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