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| 型號(hào)： | P89V664FBC,557 |
| 廠商： | NXP Semiconductors |
| 文件頁(yè)數(shù)： | 48/90頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 64K 44-TQFP |
| 產(chǎn)品培訓(xùn)模塊： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 標(biāo)準(zhǔn)包裝： | 800 |
| 系列： | 89V |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 40MHz |
| 連通性： | I²C，SPI，UART/USART |
| 外圍設(shè)備： | POR，PWM，WDT |
| 輸入/輸出數(shù)： | 36 |
| 程序存儲(chǔ)器容量： | 64KB（64K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 2K 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-TQFP |
| 包裝： | 托盤(pán) |
| 產(chǎn)品目錄頁(yè)面： | 706 (CN2011-ZH PDF) |
| 配用： | 622-1001-ND - USB IN-CIRCUIT PROG 80C51ISP |
| 其它名稱： | 568-2437 935280835557 P89V664FBC |
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P89V660_662_664
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3.1 — 17 October 2011
52 of 90
NXP Semiconductors
P89V660/662/664
80C51 with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI
The following examples will help to show the versatility of this scheme.
Example 1, slave 0:
(4)
Example 2, slave 1:
(5)
In the above example SADDR is the same and the SADEN data is used to differentiate
between the two slaves. Slave 0 requires a ‘0’ in bit 0 and it ignores bit 1. Slave 1 requires
a ‘0’ in bit 1 and bit 0 is ignored. A unique address for Slave 0 would be 1100 0010 since
slave 1 requires a ‘0’ in bit 1. A unique address for slave 1 would be 1100 0001 since a ‘1’
in bit 0 will exclude slave 0. Both slaves can be selected at the same time by an address
which has bit 0 = 0 (for slave 0) and bit 1 = 0 (for slave 1). Thus, both could be addressed
with 1100 0000.
Fig 22. Schemes used by the UART to detect ‘given’ and ‘broadcast’ addresses when
multiprocessor communications is enabled
002aaa527
rx_byte(7)
saddr(7)
saden(7)
rx_byte(0)
saddr(0)
.
given_address_match
logic used by UART to detect 'given address' in received data
saddr(7)
saden(7)
rx_byte(7)
saddr(0)
saden(0)
rx_byte(0)
broadcast_address_match
logic used by UART to detect 'given address' in received data
saden(0)
.
SADDR = 1100 0000
SADEN = 1111 1101
Given = 1100 00X0
----------------------------------------------------
SADDR = 1100 0000
SADEN = 1111 1110
Given = 1100 000X
----------------------------------------------------
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