參數(shù)資料
型號(hào)： P87LPC760
廠商： NXP Semiconductors N.V.
英文描述： Low power, low price, low pin count (14 pin) microcontroller with 1 kbyte OTP
中文描述： 低功耗，低價(jià)格，低引腳數(shù)（14針），1字節(jié)檢察官辦公室微控制器
文件頁數(shù)： 46/56頁
文件大?。?/td> 290K
代理商： P87LPC760
Philips Semiconductors
Preliminary data
P87LPC760
Low power, low price, low pin count (14 pin)
microcontroller with 1 kbyte OTP
2002 Mar 07
43
EPROM Characteristics
Programming of the EPROM on the P87LPC760 is accomplished
with a serial programming method. Commands, addresses, and data
are transmitted to and from the device on two pins after
programming mode is entered. Serial programming allows easy
implementation of In-System Programming of the P87LPC760 in an
application board. Details of In-System Programming can be found
in application note AN466.
The P87LPC760 contains three signature bytes that can be read
and used by an EPROM programming system to identify the device.
The signature bytes designate the device as an P87LPC760
manufactured by Philips. The signature bytes may be read by the
user program at addresses FC30h, FC31h and FC60h with the
MOVC instruction, using the DPTR register for addressing.
A special user data area is also available for access via the MOVC
instruction at addresses FCE0h through FCFFh. This “customer
code” space is programmed in the same manner as the main code
EPROM and may be used to store a serial number, manufacturing
date, or other application information.
32-Byte Customer Code Space
A small supplemental EPROM space is reserved for use by the
customer in order to identify code revisions, store checksums, add a
serial number to each device, or any other desired use. This area
exists in the code memory space from addresses FCE0h through
FCFFh. Code execution from this space is not supported, but it may
be read as data through the use of the MOVC instruction with the
appropriate addresses. The memory may be programmed at the
same time as the rest of the code memory and UCFG bytes are
programmed.
System Configuration Bytes
A number of user configurable features of the P87LPC760 must be
defined at power up and therefore cannot be set by the program
after start of execution. Those features are configured through the
use of two EPROM bytes that are programmed in the same manner
as the EPROM program space. The contents of the two
configuration bytes, UCFG1 and UCFG2, are shown in Figures 39
and 40. The values of these bytes may be read by the program
through the use of the MOVX instruction at the addresses shown in
the figure.
BIT
UCFG1.7
SYMBOL
WDTE
FUNCTION
Watchdog timer enable. When programmed (0), disables the watchdog timer. The timer may
still be used to generate an interrupt.
Reset pin disable. When 1 disables the reset function of pin P1.5, allowing it to be used as an
input only port pin.
Port reset high. When 1, ports reset to a high state. When 0, ports reset to a low state.
Brownout voltage select. When 1, the brownout detect voltage is 2.5V. When 0, the brownout
detect voltage is 3.8V. This is described in the Power Monitoring Functions section.
Clock rate select. When 0, the CPU clock rate is divided by 2. This results in machine cycles
taking 12 CPU clocks to complete as in the standard 80C51. For full backward compatibility,
this division applies to peripheral timing as well.
CPU oscillator type select. See Oscillator section for additional information. Combinations
other than those shown below should not be used. They are reserved for future use.
Oscillator Configuration
External clock input on X1 (default setting for an unprogrammed part).
Internal RC oscillator, 6 MHz. For tolerance, see AC Electrical Characteristics table.
Low frequency crystal, 20 kHz to 100 kHz.
Medium frequency crystal or resonator, 100 kHz to 4 MHz.
High frequency crystal or resonator, 4 MHz to 20 MHz.
UCFG1.6
RPD
UCFG1.5
UCFG1.4
PRHI
BOV
UCFG1.3
CLKR
UCFG1.2–0 FOSC2–FSOC0
FOSC2–FOSC0
1 1 1
0 1 1
0 1 0
0 0 1
0 0 0
FOSC0
SU01477
FOSC1
FOSC2
CLKR
BOV
PRHI
RPD
WDTE
0
1
2
3
4
5
6
7
UCFG1
Unprogrammed Value: FFh
Address: FD00h
Figure 39. EPROM System Configuration Byte 1 (UCFG1)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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 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
P87LPC760BDH,112 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 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
P87LPC760BDH,118 功能描述:8位微控制器 -MCU 14 PIN MCU 1KBYTE OTP 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
P87LPC760BN 功能描述:8位微控制器 -MCU 1K/128 OTP 2.7-6V COMM DIP 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
P87LPC760BN,112 功能描述:8位微控制器 -MCU 1K/128 OTP 2.7-6V 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
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