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參數(shù)資料
| 型號： | P87C557E8 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8 BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 37/84頁 |
| 文件大?。?/td> | 322K |
| 代理商： | P87C557E8 |
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1999 Mar 12
37
Philips Semiconductors
Product specification
8-bit microcontroller
P8xC557E8
13.2.2
S
ERIAL
S
TATUS
R
EGISTER
(S1STA)
The contents of this register may be used as a vector to a service routine. This optimizes the response time of the
software and consequently that of the I
2
C-bus. S1STA is a read-only register. The status codes for all possible modes
of the I
2
C-bus interface are given in Tables 51 to 55.
Table 49
Serial status register (address D9H)
Table 50
Description of S1STA bits
Table 51
MST/TRX mode
Table 52
MST/REC mode
7
6
5
4
3
2
1
0
SC4
SC3
SC2
SC1
SC0
0
0
0
BIT
SYMBOL
DESCRIPTION
7 to 3
2 to 0
SC4 to SC0
5-bit status code.
These 3 bits are held LOW (for service routine vector increment 8).
S1STA VALUE
DESCRIPTION
08H
10H
18H
20H
28H
30H
38H
A START condition has been transmitted.
A repeated START condition has been transmitted.
SLA and W have been transmitted, ACK has been received.
SLA and W have been transmitted, ACK received.
DATA and S1DAT has been transmitted, ACK received.
DATA and S1DAT has been transmitted, ACK received.
Arbitration lost in SLA, R/W or DATA.
S1STA VALUE
DESCRIPTION
38H
40H
48H
50H
58H
Arbitration lost while returning ACK.
SLA and R have been transmitted, ACK received.
SLA and R have been transmitted, ACK received.
DATA has been received, ACK returned.
DATA has been received, ACK returned.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P87C557E8EFB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| P87C557E8EFB/01,55 | 功能描述:8位微控制器 -MCU 8B MICROCONTROLLER 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 |
| P87C557E8EFB/01,557 | 制造商:NXP Semiconductors 功能描述: |
| P87C575EBA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| P87C575EBAA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer |
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