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参数资料
| 型号： | P89V52X2FBD,157 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 7/57页 |
| 文件大小： | 0K |
| 描述： | IC 80C51 MCU FLASH 8K 44-LQFP |
| 产品培训模块： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 标准包装： | 800 |
| 系列： | 89V |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 40MHz |
| 连通性： | 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： | 闪存 |
| EEPROM 大小： | 192 x 8 |
| RAM 容量： | 256 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LQFP |
| 包装： | 托盘 |
| 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 |
| 其它名称： | 568-4250 935282529157 P89V52X2FBD |
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P89V52X2_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 4 May 2009
15 of 57
NXP Semiconductors
P89V52X2
80C51 with 256 B RAM, 192 B data EEPROM
6.7 Flash memory
6.7.1 Flash organization
The P89V52X2 program memory consists of an 8 kB block of user code. The ash can be
read or written in bytes but may only be erased as an entire block. A chip erase function
will erase the entire user code memory and its associated security bits. This ash memory
can be erased or programmed using a programmer tool that supports ICP.
6.7.2 Features
Flash internal program memory.
Programming and erase over the full operating voltage range.
Programming with industry-standard commercial programmers.
10000 typical erase/program cycles for each byte.
100 year minimum data retention.
6.8 Timers/counters 0 and 1
The two 16-bit Timer/Counter registers: Timer 0 and Timer 1 can be congured to operate
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.
Table 10.
TMOD - Timer/Counter mode control register (address 89H) bit allocation
Not bit addressable; Reset value: 0000 0000B; Reset source(s): any source
Bit
7
6
5
4
3
2
1
0
Symbol
T1GATE
T1C/T
T1M1
T1M0
T0GATE
T0C/T
T0M1
T0M0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| P89V52X2FN | 制造商:PHILIPS 制造商全称: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 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 |
| P89V660 | 制造商:PHILIPS 制造商全称: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 |
| P89V660_08 | 制造商:PHILIPS 制造商全称: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 |
| P89V660_0811 | 制造商:PHILIPS 制造商全称: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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