P89LPC938 NXP Semiconductors, P89LPC938 Datasheet - Page 53

• Manufacturer Part Number: P89LPC938
• Description: The P89LPC938 is a single-chip microcontroller, available in low cost packages, based ona high performance processor architecture that executes instructions in two to four clocks,six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

Philips Semiconductors
11. Dynamic characteristics
Table 11:
V
T
9397 750 14051
Product data sheet
Symbol
f
f
f
T
f
Glitch filter
t
t
External clock
t
t
t
t
Shift register (UART mode 0)
t
t
t
t
t
SPI interface
f
t
t
t
OSC(RC)
OSC(WD)
osc
CLKLP
gr
sa
CHCX
CLCX
CLCH
CHCL
XLXL
QVXH
XHQX
XHDX
XHDV
SPI
SPICYC
SPILEAD
SPILAG
amb
DD
cy(CLK)
= 2.4 V to 3.6 V, unless otherwise specified.
= 40 C to +85 C for industrial applications, unless otherwise specified.
AC characteristics
Parameter
internal RC oscillator frequency
internal watchdog oscillator frequency
oscillator frequency
clock cycle time
low power select frequency
glitch rejection
signal acceptance
clock HIGH time
clock LOW time
clock rise time
clock fall time
serial port clock cycle time
output data set-up to clock rising edge
time
output data hold after clock rising
edge time
input data hold after clock rising edge
time
input data valid to clock rising edge
time
SPI operating frequency
SPI cycle time
SPI enable lead time
SPI enable lag time
2.0 MHz (slave)
3.0 MHz (master)
2.0 MHz (slave)
3.0 MHz (master)
2.0 MHz (slave)
2.0 MHz (slave)
Rev. 01 — 25 February 2005
Conditions
see
P1.5/RST pin
any pin except
P1.5/RST
any pin except
P1.5/RST
see
see
see
see
see
see
see
see
see
see
25, 26,
see
27
see
27
P1.5/RST pin
Figure
Figure
Figure
Figure 23
Figure 23
Figure 23
Figure 23
Figure 23
Figure 22
Figure 22
Figure 22
Figure 22
Figure 22
27
24,
26,
26,
8-bit microcontroller with 10-bit A/D converter
Variable clock
Min
7.189
320
0
83
0
-
-
125
50
33
33
-
-
16 T
13 T
-
-
150
0
-
6
4
250
250
CCLK
CCLK
cy(CLK)
cy(CLK)
[1] [2]
Max
7.557
520
12
-
8
50
15
-
-
T
T
8
8
-
-
T
0
-
CCLK
CCLK
-
-
-
-
cy(CLK)
cy(CLK)
cy(CLK)
6
4
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
+ 20
t
t
CLCX
CHCX
P89LPC938
f
Min
7.189
320
-
-
-
-
-
125
50
33
33
-
-
1333
1083
-
-
150
0
-
500
333
250
250
osc
= 12 MHz
Max
7.557
520
-
-
-
50
15
-
-
-
-
8
8
-
-
103
0
-
2.0
3.0
-
-
-
-
53 of 68
Unit
MHz
kHz
MHz
ns
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
MHz
ns
ns
ns
ns