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參數資料
| 型號： | P89C669 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 80C51 8-bit microcontroller family with extended memory 96 kB Flash with 2 kB RAM |
| 中文描述： | 80C51的8位擴展內存，2 KB RAM內存96 kB閃存微控制器系列 |
| 文件頁數： | 21/33頁 |
| 文件大小： | 827K |
| 代理商： | P89C669 |
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Philips Semiconductors
P89C669
80C51 8-bit microcontroller family with extended memory
Product data
Rev. 02 — 13 November 2003
21 of 33
9397 750 12299
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
[1]
[2]
[3]
Parameters are valid over operating temperature range unless otherwise specified.
Load capacitance for port 0, ALE, and PSEN = 100 pF, load capacitance for all other outputs = 80 pF.
Interfacing the microcontroller to devices with float times up to 45 ns is permitted. This limited bus contention will not cause damage to
Port 0 drivers.
Parts are tested down to 2 MHz, but are guaranteed to operate down to 0 Hz.
[4]
10.1 Explanation of AC symbols
Each timing symbol has five characters. The first character is always ‘t’ ( = time). The
other characters, depending on their positions, indicate the name of a signal or the
logical status of that signal. The designations are:
A —
Address
C —
Clock
D —
Input data
H —
Logic level HIGH
I —
Instruction (program memory contents)
L —
Logic level LOW, or ALE
P —
PSEN
Q —
Output data
R —
RD signal
t —
Time
V —
Valid
W —
WR signal
X —
No longer a valid logic level
Z —
Float
Table 10:
Symbol
t
HD;STA
t
LOW
t
HIGH
t
RC
t
FC
t
SU;DAT1
t
SU;DAT2
I
2
C-bus interface characteristics
Parameter
START condition hold time
SCL LOW time
SCL HIGH time
SCL rise time
SCL fall time
Data set-up time
SDA set-up time
Conditions
Input
≥
7t
CLCL
≥
8t
CLCL
≥
7t
CLCL
≤
1
μ
s
≤
0.3
μ
s
≥
250 ns
≥
250 ns
Output
> 4.0
μ
s
> 4.7
μ
s
> 4.0
μ
s
-
< 0.3
μ
s
> 10t
CLCL
t
RD
> 1
μ
s
before repeated START
condition
before STOP condition
t
SU;DAT3
t
HD;DAT
t
SU;STA
SDA set-up time
Data hold time
Repeated START set-up
time
STOP condition set-up time
Bus free time
SDA rise time
SDA fall time
≥
250 ns
≥
0 ns
≥
7t
CLCL
> 4t
CLCL
> 4t
CLCL
- t
FC
> 4.7
μ
s
t
SU;STO
t
BUF
t
RD
t
FD
≥
7t
CLCL
≥
7t
CLCL
≤
1
μ
s
≤
300 ns
> 4.0
μ
s
> 4.7
μ
s
-
< 0.3
μ
s
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