- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367743 > P89V51RC2BN (NXP SEMICONDUCTORS) 8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM PDF資料下載
參數(shù)資料
| 型號： | P89V51RC2BN |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | 0.600 INCH, PLASTIC, MO-015, SOT-129-1, DIP-40 |
| 文件頁數(shù)： | 27/77頁 |
| 文件大?。?/td> | 350K |
| 代理商： | P89V51RC2BN |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁當前第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁
Philips Semiconductors
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
Product data
Rev. 03 — 02 December 2004
27 of 77
9397 750 14341
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
7.3 Timers/counters 0 and 1
The two 16-bit Timer/Counter registers: Timer 0 and Timer 1 can be configured to
operate either as timers or event counters (see
Table 14
and
Table 15
).
In the ‘Timer’ function, the register is incremented every machine cycle. Thus, one
can think of it as counting machine cycles. Since a machine cycle consists of six
oscillator periods, the count rate is
1
6
of the oscillator frequency.
In the ‘Counter’ function, the register is incremented in response to a 1-to-0 transition
at its corresponding external input pin, T0 or T1. In this function, the external input is
sampled once every machine cycle.
When the samples show a high in one cycle and a low in the next cycle, the count is
incremented. The new count value appears in the register in the machine cycle
following the one in which the transition was detected. Since it takes two machine
cycles (12 oscillator periods) for 1-to-0 transition to be recognized, the maximum
count rate is
1
12
of the oscillator frequency. There are no restrictions on the duty cycle
of the external input signal, but to ensure that a given level is sampled at least once
before it changes, it should be held for at least one full machine cycle. In addition to
the ‘Timer’ or ‘Counter’ selection, Timer 0 and Timer 1 have four operating modes
from which to select.
The ‘Timer’ or ‘Counter’ function is selected by control bits C/T in the Special
Function Register TMOD. These two Timer/Counters have four operating modes,
which are selected by bit-pairs (M1, M0) in TMOD. Modes 0, 1, and 2 are the same
for both Timers/Counters. Mode 3 is different. The four operating modes are
described in the following text.
Program Security Bit, Double
Clock
Input parameters:
R1 = 05h
DPL = 01H = security bit
DPL = 05H = Double Clock
Return parameter(s):
ACC = 00 = pass
ACC = !00 = fail
Input parameters:
ACC = 07h
Return parameter(s):
ACC = 00 SoftICE S/N-match 0 SB 0 DBL_CLK
Input parameters:
R1 = 08h
DPH = sector address high byte
DPL = sector address low byte
Return parameter(s):
ACC = 00 = pass
ACC = !00 = fail
Read Security Bit, Double Clock,
SoftICE
Erase sector
Table 13:
IAP function
IAP function calls
…continued
IAP call parameters
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P89V51RD2 | 8-bit 80C51 5 V low power 64 kB Flash microcontroller with 1 kB RAM |
| P8AX | Gas Tube Coaxial Surge Protector |
| P8AX09BNC | Gas Tube Coaxial Surge Protector |
| P8AX09N | Gas Tube Coaxial Surge Protector |
| P8AX09SMA | Gas Tube Coaxial Surge Protector |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P89V51RC2FA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM |
| P89V51RC2FA,512 | 功能描述:8位微控制器 -MCU 80C51 32K FL / 512 R 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| P89V51RC2FBC | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16/32/64 kB flash microcontroller with 1 kB RAM |
| P89V51RC2FBC,557 | 功能描述:8位微控制器 -MCU 80C51 32K FL / 512 R 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| P89V51RC2FN | 制造商:NXP Semiconductors 功能描述:IC MCU 8BIT 80C51 32K FLASH DIP40 |
發(fā)布緊急采購，3分鐘左右您將得到回復。