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| 型號： | P89CV51RB2FA,512 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 21/76頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 16K 44-PLCC |
| 產(chǎn)品培訓模塊： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 標準包裝： | 1,300 |
| 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： | 16KB（16K 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 |
| 產(chǎn)品目錄頁面： | 706 (CN2011-ZH PDF) |
| 其它名稱： | 568-4252-5 935284111512 P89CV51RB2FA |
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P89CV51RB2_RC2_RD2_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 25 August 2009
28 of 76
NXP Semiconductors
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
6.4.1 Mode 0
Putting either timer into Mode 0 makes it look like an 8048 timer, which is an 8-bit counter
with a xed divide-by-32 prescaler. Figure 7 shows Mode 0 operation.
In this mode, the timer register is congured as a 13-bit register. As the count rolls over
from all 1s to all 0s, it sets the timer interrupt ag TFn. The count input is enabled to the
timer when TRn = 1 and either GATE = 0 or INTn = 1. (Setting GATE = 1 allows the timer
to be controlled by external input INTn, to facilitate pulse width measurements). TRn is a
control bit in the special function register TCON (Table 17). The GATE bit is in the TMOD
register.
The 13-bit register consists of all 8 bits of THn and the lower 5 bits of TLn. The upper
3 bits of TLn are indeterminate and should be ignored. Setting the run ag (TRn) does not
clear the registers.
Mode 0 operation is the same for Timer 0 and Timer 1; see Figure 7. There are two
different GATE bits, one for Timer 1 (TMOD.7) and one for Timer 0 (TMOD.3).
Table 17.
TCON - Timer/Counter control register (address 88H) bit description
Bit
Symbol
Description
7
TF1
Timer 1 overow Flag. Set by hardware on timer/counter overow. Cleared
by hardware when the processor vectors to Timer 1 interrupt routine, or by
software.
6
TR1
Timer 1 Run control bit. Set/cleared by software to turn timer/counter 1
on/off.
5
TF0
Timer 0 overow Flag. Set by hardware on timer/counter overow. Cleared
by hardware when the processor vectors to Timer 0 interrupt routine, or by
software.
4
TR0
Timer 0 Run control bit. Set/cleared by software to turn timer/counter 0
on/off.
3
IE1
Interrupt 1 Edge ag. Set by hardware when external interrupt 1
edge/LOW-state is detected. Cleared by hardware when the interrupt is
processed, or by software.
2
IT1
Interrupt 1 Type control bit. Set/cleared by software to specify falling
edge/LOW-state that triggers external interrupt 1.
1
IE0
Interrupt 0 Edge ag. Set by hardware when external interrupt 0
edge/LOW-state is detected. Cleared by hardware when the interrupt is
processed, or by software.
0
IT0
Interrupt 0 Type control bit. Set/cleared by software to specify falling
edge/LOW-state that triggers external interrupt 0.
Fig 7.
Timer/counter 0 or 1 in Mode 0 (13-bit counter)
002aaa519
osc/6
Tn pin
TRn
TnGate
INTn pin
C/T = 0
C/T = 1
TLn
(5-bits)
THn
(8-bits)
TFn
control
overflow
interrupt
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| P89CV51RB2FBC | 功能描述:8位微控制器 -MCU 80C51 16K 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 |
| P89CV51RB2FBC,557 | 功能描述:8位微控制器 -MCU 80C51 16K 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 |
| P89CV51RC2 | 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 |
| P89CV51RC2FA | 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 |
| P89CV51RC2FA,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 |
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