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參數(shù)資料
| 型號： | P89C664 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 80C51 8-bit Flash microcontroller family |
| 中文描述： | 80C51的8位閃存微控制器系列 |
| 文件頁數(shù)： | 13/89頁 |
| 文件大小： | 491K |
| 代理商： | P89C664 |
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Philips Semiconductors
Product data
P89C660/P89C662/P89C664/
P89C668
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
2002 Oct 28
13
V
DD
OTHER DEVICE WITH
I
C INTERFACE
P89C66x
OTHER DEVICE WITH
I
C INTERFACE
P1.7/SDA
P1.6/SCL
SDA
SCL
I
2
C bus
R
P
R
P
SU01710
Figure 1. Typical I
2
C Bus Configuration
SCL
START
CONDITION
S
SDA
P/S
MSB
ACKNOWLEDGMENT
SIGNAL FROM RECEIVER
CLOCK LINE HELD LOW WHILE
INTERRUPTS ARE SERVICED
1
2
7
8
9
1
2
3–8
ACK
9
ACK
REPEATED IF MORE BYTES
ARE TRANSFERRED
ACKNOWLEDGMENT
SIGNAL FROM RECEIVER
SLAVE ADDRESS
R/W
DIRECTION
BIT
STOP
CONDITION
REPEATED
START
CONDITION
SU00965
Figure 2. Data Transfer on the I
2
C Bus
SIO1 Implementation and Operation
Figure 3 shows how the on-chip I
2
C bus interface is implemented,
and the following text describes the individual blocks.
Input Filters and Output Stages
The input filters have I
2
C compatible input levels. If the input voltage
is less than 1.5 V, the input logic level is interpreted as 0; if the input
voltage is greater than 3.0 V, the input logic level is interpreted as 1.
Input signals are synchronized with the internal clock (f
OSC
/4), and
spikes shorter than three oscillator periods are filtered out.
The output stages consist of open drain transistors that can sink
3mA at V
OUT
< 0.4 V. These open drain outputs do not have
clamping diodes to V
DD
. Thus, if the device is connected to the I
2
C
bus and V
DD
is switched off, the I
2
C bus is not affected.
Address Register, S1ADR
This 8-bit special function register may be loaded with the 7-bit slave
address (7 most significant bits) to which SIO1 will respond when
programmed as a slave transmitter or receiver. The LSB (GC) is
used to enable general call address (00H) recognition.
Comparator
The comparator compares the received 7-bit slave address with its
own slave address (7 most significant bits in S1ADR). It also
compares the first received 8-bit byte with the general call address
(00H). If an equality is found, the appropriate status bits are set and
an interrupt is requested.
Shift Register, S1DAT
This 8-bit special function register contains a byte of serial data to
be transmitted or a byte which has just been received. Data in
S1DAT is always shifted from right to left; the first bit to be
transmitted is the MSB (bit 7) and, after a byte has been received,
the first bit of received data is located at the MSB of S1DAT. While
data is being shifted out, data on the bus is simultaneously being
shifted in; S1DAT always contains the last byte present on the bus.
Thus, in the event of lost arbitration, the transition from master
transmitter to slave receiver is made with the correct data in S1DAT.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P89C664HFA | 80C51 8-bit Flash microcontroller family |
| P89C664HFBD | 80C51 8-bit Flash microcontroller family |
| P89C662HBA | 80C51 8-bit Flash microcontroller family |
| P89C662HBBD | 80C51 8-bit Flash microcontroller family |
| P89C664HBA | 80C51 8-bit Flash microcontroller family |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P89C664HBA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit Flash microcontroller family |
| P89C664HBA/00,512 | 功能描述:8位微控制器 -MCU 64K/2K FL 6 CLK ISP/IAP COM 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 |
| P89C664HBBD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit Flash microcontroller family |
| P89C664HBBD/00,557 | 功能描述:8位微控制器 -MCU 64K/2K FL 6 CLK ISP/IAP COM 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 |
| P89C664HFA | 制造商:PHIL 功能描述: |
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