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| 型號： | P89CV51RB2FA,512 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 19/76頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 16K 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： | 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
26 of 76
NXP Semiconductors
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
6.4 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 a 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 selectable operating modes.
Program status bit, boot vector,
6
×/12× bit
Input parameters:
R1 = 06H or 86H (WDT feed)
DPL = 00H = program status bit
DPL = 01H = program boot vector
DPL = 02H = 6
×/12× bit
ACC = boot vector value to program
Return parameter(s):
ACC = 00: pass
ACC is not 00: fail
Read security bits, status bit, boot
vector
Input parameters:
ACC = 07H or 87H (WDT feed)
DPL = 00H = security bits
DPL = 01H = status bit
DPL = 02H = boot vector
Return parameter(s):
ACC = 00 SoftICE S/N-match 0 SB 0 DBL_CLK
Erase page
Input parameters:
R1 = 08H or 88H (WDT feed)
DPH = page address high byte
DPL = page address low byte
Return parameter(s):
ACC = 00: pass
ACC is not 00: fail
Table 12.
IAP function calls …continued
IAP function
IAP call parameters
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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(fēng)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(fēng)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(fēng)格:SMD/SMT |
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