p87lpc778 NXP Semiconductors, p87lpc778 Datasheet - Page 74

• Manufacturer Part Number: p87lpc778
• Description: Cmos Single-chip 8-bit 80c51 Microcontroller 128-byte Data Ram, 8 Kb Otp
• Manufacturer: NXP Semiconductors

Philips Semiconductors
11. Dynamic characteristics
Table 69:
V
T
[1]
[2]
[3]
[4]
9397 750 12378
Product data
Symbol
External Clock
f
f
t
t
t
t
t
Internal RC Oscillator
f
f
f
Shift Register
t
t
t
t
t
C
C
C
CLCX
CLCX
CHCX
CHCX
CCAL
CTOL
CTOL1
XLXL
QVXH
XHQX
XHDV
XHDX
amb
DD
Fig 29. Shift register mode timing.
Applies only to an external clock source, not when a crystal is connected to the X1 and X2 pins.
Tested at V
These parameters are characterized but not tested.
These parameters are for 0 C to +70 C
= 2.7 V to 5.5 V unless otherwise specified; V
= 40 C to +85 C for extended industrial, unless otherwise specified.
AC electrical characteristics
Write to SBUF
DD
Figure
30
30
30
30
30
30
30
29
29
29
29
29
Output Data
Input Data
Clear RI
= 5.0 V and room temperature.
Clock
t QVXH
Parameter
Oscillator frequency (V
Oscillator frequency (V
Clock period and CPU timing cycle
Clock low-time
Clock high time
On-chip oscillator calibration
On-chip oscillator tolerance
On-chip oscillator tolerance
Serial port clock cycle time
Output data set-up to clock rising edge
Output data hold after clock rising edge
Input data set-up to clock rising edge
Input data hold after clock rising edge
t XHDV
t XLXL
Valid
0
[1]
[1]
t XHDX
t XHQX
Valid
1
DD
DD
SS
Rev. 01 — 31 March 2004
= 4.0 V to 5.5 V)
= 2.7 V to 5.5 V)
= 0 V.
[3][4]
[3]
[2]
Valid
2
[1][2][3]
Valid
f
f
f
f
f
f
f
3
osc
osc
osc
osc
RCOSC
RCOSC
RCOSC
= 20 MHz
= 10 MHz
= 20 MHz
= 10 MHz
= 6 MHz
= 6 MHz
= 6 MHz
Valid
4
CMOS single-chip 8-bit microcontroller
Valid
5
Min
0
0
1/f
20
40
20
40
6t
5t
1t
-
0
1
2.5
25
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
C
C
C
C
Valid
133
80
6
P87LPC778
Max
20
10
-
-
-
-
-
+1
+2.5
+25
-
-
-
5t
-
002aaa425
Valid
Set TI
Set RI
C
7
133
Unit
MHz
MHz
ns
ns
ns
ns
ns
%
%
%
ns
ns
ns
ns
ns
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