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| 型號： | P89CV51RC2FA,512 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 8/76頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 32K 44-PLCC |
| 產(chǎn)品培訓(xùn)模塊： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 標(biāo)準(zhǔn)包裝： | 26 |
| 系列： | 89C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 40MHz |
| 連通性： | EBI/EMI，SPI，UART/USART |
| 外圍設(shè)備： | POR，PWM，WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲器容量： | 32KB（32K x 8） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 44-LCC（J 形引線） |
| 包裝： | 管件 |
| 其它名稱： | 568-4254-5 935284108512 P89CV51RC2FA |
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P89CV51RB2_RC2_RD2_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 25 August 2009
16 of 76
NXP Semiconductors
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
6.2.3 Reset
At initial power-up, the port pins will be in a random state until the oscillator has started
and the internal reset algorithm has weakly pulled all pins HIGH. Powering up the device
without a valid reset could cause the MCU to start executing instructions from an
indeterminate location. Such undened states may inadvertently corrupt the code in the
ash. A system reset will not affect the on-chip RAM while the device is running, however,
the contents of the on-chip RAM during power-up are indeterminate.
When power is applied to the device, the RST pin must be held HIGH long enough for the
oscillator to start-up (usually several milliseconds for a low frequency crystal), in addition
to two machine cycles for a valid power-on reset. An example of a method to extend the
RST signal is to implement an RC circuit by connecting the RST pin to VDD through a
10
F capacitor and to V
SS through an 8.2 k resistor as shown in Figure 6.
During initial power-up the POF ag in the PCON register is set to indicate an initial
power-up condition. The POF ag will remain active until cleared by software.
Fig 5.
Dual data pointer organization
Table 8.
AUXR1 - Auxiliary function register 1 (address A2H) bit allocation
Not bit addressable; reset value 00H.
Bit
7
6
5
4
3
2
1
0
Symbol
-
ENBOOT
-
GF2
0
-
DPS
Table 9.
AUXR1 - Auxiliary function register 1 (address A2H) bit description
Bit
Symbol
Description
7, 6, 4
-
Reserved for future use. Should be set to 0 by user programs.
5
ENBOOT
Enable BOOTROM
3
GF2
General purpose user-dened Flag.
2
0
This bit contains a hard-wired 0. Allows toggling of the DPS bit by
incrementing AUXR1, without interfering with other bits in the register.
1
-
Reserved for future use. Should be set to 0 by user programs.
0
DPS
Data Pointer Select. Chooses one of two data pointers for use by the
program. See text for details.
DPL
82H
DPS = 0
→ DPTR0
DPS = 1
→ DPTR1
external data memory
DPS
002aaa518
DPH
83H
DPTR0
DPTR1
AUXR1 / bit0
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| P89CV51RC2FBC | 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(shí)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(fēng)格:SMD/SMT |
| P89CV51RC2FBC,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(shí)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(fēng)格:SMD/SMT |
| P89CV51RD2 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 64 kB flash microcontroller with 1 kB RAM, SPI, 6-clock CPU with 6/12-clock peripherals |
| P89CV51RD2FA | 制造商: 功能描述: 制造商:undefined 功能描述: |
| P89CV51RD2FA,512 | 功能描述:8位微控制器 -MCU 64K/1K FL 12 CLK ISP/IAP IND 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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