p89c669 NXP Semiconductors, p89c669 Datasheet - Page 20

• Manufacturer Part Number: p89c669
• Description: P89c669 80c51 8-bit Microcontroller Family With Extended Memory; 96 Kb Flash With 2 Kb Ram
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 9:
T
50/50 duty cycle.
[1]
[2]
[3]
[4]
9397 750 12299
Product data
Symbol
t
t
t
t
t
External Clock
t
t
t
t
Shift Register
t
t
t
t
t
QVWX
WHQX
QVWH
RLAZ
WHLH
CHCX
CLCX
CLCH
CHCL
XLXL
QVXH
XHQX
XHDX
XHDV
amb
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.
= 0 C to +70 C for commercial unless otherwise specified. Formulae including t
Figure
7
7
7
6
6,
9
9
9
9
8
8
8
8
8
AC electrical characteristics
7
[1][2][3]
Parameter
Data valid to WR transition
Data hold after WR
Data valid to WR HIGH
RD LOW to address float
RD or WR HIGH to ALE HIGH
HIGH time
LOW time
Rise time
Fall Time
Serial port clock cycle time
Output data set-up to clock rising edge
Output data hold after clock rising edge t
Input data hold after clock rising edge
Clock rising edge to input data valid
…continued
Rev. 02 — 13 November 2003
80C51 8-bit microcontroller family with extended memory
4.5 V < V
Variable clock
Min
0.5t
0.5t
3.5t
-
0.5t
16
16
-
-
6t
5t
0
-
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
15
10
DD
15
11
10
11
< 5.5 V
[4]
Max
-
-
-
0
0.5t
t
t
4
4
-
-
-
-
5t
CLCL
CLCL
CLCL
CLCL
CLCL
t
t
CLCX
CHCX
35
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
+ 10
assume oscillator signal with
f
Min
5
9
135
-
9
16
16
-
-
250
198
26
0
-
OSC
= 24 MHz
P89C669
Max
-
-
-
0
30
-
-
4
4
-
-
-
-
173
[4]
20 of 33
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns