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參數(shù)資料
| 型號： | P83CE560 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT SINGLE CHIP MICROCONTROLLERS |
| 中文描述： | 8位單晶片微控制器 |
| 文件頁數(shù)： | 37/84頁 |
| 文件大?。?/td> | 441K |
| 代理商： | P83CE560 |
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1997 Aug 01
37
Philips Semiconductors
Product specification
8-bit microcontroller
P8xCE560
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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