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| 型號： | P89V52X2FA,512 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 16/57頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 8K 44-PLCC |
| 產品培訓模塊： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 標準包裝： | 1,300 |
| 系列： | 89V |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 40MHz |
| 連通性： | UART/USART |
| 外圍設備： | POR |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲器容量： | 8KB（8K x 8） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大小： | 192 x 8 |
| RAM 容量： | 256 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 44-LCC（J 形引線） |
| 包裝： | 管件 |
| 產品目錄頁面： | 706 (CN2011-ZH PDF) |
| 配用： | 622-1017-ND - BOARD 44-ZIF PLCC SOCKET 622-1012-ND - BOARD FOR P89V52X2 44-TQFP 622-1008-ND - BOARD FOR LPC9103 10-HVSON 622-1002-ND - USB IN-CIRCUIT PROG LPC9XX |
| 其它名稱： | 568-4249-5 935282528512 P89V52X2FA |
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P89V52X2_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 4 May 2009
23 of 57
NXP Semiconductors
P89V52X2
80C51 with 256 B RAM, 192 B data EEPROM
When a logic 0 is applied at pin T2EX this causes Timer 2 to count down. The timer will
underow when TL2 and TH2 become equal to the value stored in RCAP2L and
RCAP2H. Timer 2 underow sets the TF2 ag and causes 0FFFFH to be reloaded into
the timer registers TL2 and TH2. The external ag EXF2 toggles when Timer 2 underows
or overows. This EXF2 bit can be used as a 17th bit of resolution if needed.
6.9.3 Programmable clock-out
A 50 % duty cycle clock can be programmed to come out on pin T2 (P1[0]). This pin,
besides being a regular I/O pin, has two additional functions. It can be programmed:
1. To input the external clock for Timer/Counter 2, or
2. To output a 50 % duty cycle clock ranging from 122 Hz to 8 MHz at a 16 MHz
operating frequency.
To congure the Timer/Counter 2 as a clock generator, bit C/T2 (in T2CON) must be
cleared and bit T2OE in T2MOD must be set. Bit TR2 (T2CON.2) also must be set to start
the timer.
The Clock-Out frequency depends on the oscillator frequency and the reload value of
Timer 2 capture registers (RCAP2H, RCAP2L) as shown in Equation 2:
(2)
Where (RCAP2H, RCAP2L) = the content of RCAP2H and RCAP2L taken as a 16-bit
unsigned integer.
In the Clock-Out mode Timer 2 rollovers will not generate an interrupt. This is similar to
when it is used as a baud rate generator.
6.9.4 Baud rate generator mode
Bits TCLK and/or RCLK in T2CON allow the UART transmit and receive baud rates to be
derived from either Timer 1 or Timer 2 (See Section 6.10 for details). When TCLK = 0,
Timer 1 is used as the UART transmit baud rate generator. When TCLK = 1, Timer 2 is
Fig 16. Timer 2 in Auto Reload mode (DCEN = 1)
002aaa525
TL2
(8-bits)
TH2
(8-bits)
TF2
EXF2
underflow
timer 2
interrupt
RCAP2L RCAP2H
FFH
overflow
(down-counting reload value)
(up-counting reload value)
count direction
1 = up
0 = down
T2EX pin
toggle
OSC
÷6
T2 pin
C/T2 = 0
C/T2 = 1
control
TR2
OscillatorFrequency
2
65536
RCAP2H RCAP2L
,
()
∠
()
×
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| P89V52X2FBD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 low power 8 kB flash microcontroller with 256 B RAM, 192 B data EEPROM |
| P89V52X2FBD,157 | 功能描述:8位微控制器 -MCU 80C51 8K FL / 256 RM 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 |
| P89V52X2FN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 low power 8 kB flash microcontroller with 256 B RAM, 192 B data EEPROM |
| P89V52X2FN,112 | 功能描述:8位微控制器 -MCU 80C51 8K FL / 256 RM 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 |
| P89V660 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16 kB/32 kB/64 kB flash microcontroller with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI |
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