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參數(shù)資料
| 型號(hào)： | P89V51RC2 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM |
| 中文描述： | 8位80C51的5 V低功耗16/32/64 kB閃存1 KB RAM內(nèi)存控制器 |
| 文件頁(yè)數(shù)： | 44/77頁(yè) |
| 文件大?。?/td> | 350K |
| 代理商： | P89V51RC2 |
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Philips Semiconductors
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
Product data
Rev. 03 — 02 December 2004
44 of 77
9397 750 14341
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
7.7 Watchdog timer
The device offers a programmable Watchdog Timer (WDT) for fail safe protection
against software deadlock and automatic recovery.
Table 33:
Bit addressable; Reset source(s): any reset; Reset value: 00000000B
Bit
7
6
Symbol
SPIF
WCOL
SPSR - SPI status register (address AAH) bit allocation
5
-
4
-
3
-
2
-
1
-
0
-
Table 34:
Bit
7
SPSR - SPI status register (address AAH) bit description
Symbol
Description
SPIF
SPI interrupt flag. Upon completion of data transfer, this bit is set to
‘1’. If SPIE = 1 and ES = 1, an interrupt is then generated. This bit
is cleared by software.
WCOL
Write Collision Flag. Set if the SPI data register is written to during
data transfer.
This bit is cleared by software.
-
Reserved for future use. Should be set to
‘0’
by user programs.
6
5 to 0
Fig 18. SPI transfer format with CPHA = 0.
002aaa529
MSB
SCK Cycle #
(for reference)
SCK (CPOL=0)
SCK (CPOL=1)
MOSI
(from Master)
MISO
(from Slave)
SS (to Slave)
6
1
2
3
4
5
6
7
8
5
MSB
6
5
4
3
2
1
LSB
4
3
2
1
LSB
Fig 19. SPI transfer format with CPHA = 1.
002aaa530
MSB
SCK Cycle #
(for reference)
SCK (CPOL=0)
SCK (CPOL=1)
MOSI
(from Master)
MISO
(from Slave)
SS (to Slave)
6
1
2
3
4
5
6
7
8
5
MSB
6
5
4
3
2
1
LSB
4
3
2
1
LSB
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| P89V51RC2BN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM |
| P89V51RC2FA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM |
| P89V51RC2FA,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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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 |
| P89V51RC2FBC | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 16/32/64 kB flash microcontroller with 1 kB RAM |
| P89V51RC2FBC,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(chǔ)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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