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參數(shù)資料
| 型號： | P87C654X2 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal Edge-Triggered D-Type Flip-Flops with 3-State Outputs 20-CDIP -55 to 125 |
| 中文描述： | 80C51的8位單片機(jī)系列16kB的檢察官辦公室/光盤，256B的RAM，低電壓（2.7至5.5 V），低功耗，高速（三十三分之三十〇兆赫） |
| 文件頁數(shù)： | 31/88頁 |
| 文件大?。?/td> | 497K |
| 代理商： | P87C654X2 |
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Philips Semiconductors
Product data
P83C654X2/P87C654X2
80C51 8-bit microcontroller family
16 kB OTP/ROM,
256B RAM, low voltage (2.7 to 5.5 V), low power, high speed
(30/33 MHz)
2004 Apr 20
31
V
DD
OTHER DEVICE WITH
I
C-BUS INTERFACE
P8xC654X2
OTHER DEVICE WITH
I
C-BUS INTERFACE
P1.7/SDA
P1.6/SCL
SDA
SCL
I
2
C-bus
R
P
R
P
SU01734
Figure 21. 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 22. Data Transfer on the I
2
C-bus
I
2
C-bus Implementation and Operation:
Figure 23 shows how the
on-chip I
2
C-bus interface is implemented, and the following text
describes the individual blocks.
I
NPUT
F
ILTERS
AND
O
UTPUT
S
TAGES
The input filters have I
2
C-bus 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.
A
DDRESS
R
EGISTER,
S
1
ADR
This 8-bit special function register may be loaded with the 7-bit slave
address (7 most significant bits) to which the I
2
C-bus will respond
when programmed as a slave transmitter or receiver. The LSB (GC)
is used to enable general call address (00H) recognition.
C
OMPARATOR
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.
S
HIFT
R
EGISTER,
S
1
DAT
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 |
|---|---|
| P83C654X2 | 80C51 8-bit microcontroller family 16 kB OTP/ROM, 256B RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33 MHz) |
| P83C654EFP | CONN HEADER 11POS SGL PCB 30GOLD |
| P83C654EFPN | CONN HEADER 13POS SGL PCB 30GOLD |
| P83C654EHA | CMOS single-chip 8-bit microcontroller |
| P83C654EHAA | CMOS single-chip 8-bit microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P87C654X2BBD,157 | 功能描述:8位微控制器 -MCU 16K/256 OTP 12/6 CLK I2C LQFP 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 |
| P87C654X2FA | 制造商:NXP Semiconductors 功能描述:P87C654X2FA 8bit microcontroller,33MHz |
| P87C654X2FA,529 | 功能描述:8位微控制器 -MCU 16K/256 OTP 12/6 CLK 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 |
| P87C654X2FA-S | 功能描述:8位微控制器 -MCU 16K/256 OTP 12/6 CLK I2C PLCC 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 |
| P87C660X2BBD | 功能描述:8位微控制器 -MCU 16K/512 OTP 12/6 CLK I2C PCA 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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