NXP Semiconductors
P89LPC932A1
8-bit microcontroller with accelerated two-clock 80C51 core
10. Dynamic characteristics
Table 9. Dynamic characteristics (12 MHz)
VDD = 2.4 V to 3.6 V unless otherwise specified.
Tamb = −40 °C to +85 °C for industrial applications, unless otherwise specified.[1][2]
Symbol Parameter
Conditions
Variable clock
Min
Max
fosc = 12 MHz Unit
Min Max
fOSC(RC)
fOSC(WD)
internal RC oscillator frequency
internal watchdog oscillator
frequency
7.189
280
7.557
480
7.189 7.557 MHz
280 480 kHz
fosc
oscillator frequency
Tcy(CLK) clock cycle time
see Figure 23
fCLKLP
low power select clock frequency
Glitch filter
0
12
-
- MHz
83
-
-
- ns
0
8
-
- MHz
tgr
glitch rejection
P1.5/RST pin
any pin except
P1.5/RST
-
50
-
50 ns
-
15
-
15 ns
tsa
signal acceptance
P1.5/RST pin
any pin except
P1.5/RST
125
-
125
- ns
50
-
50
- ns
External clock
tCHCX
clock HIGH time
tCLCX
clock LOW time
tCLCH
clock rise time
tCHCL
clock fall time
Shift register (UART mode 0)
see Figure 23
see Figure 23
see Figure 23
see Figure 23
33
Tcy(CLK) − tCLCX 33
33
Tcy(CLK) − tCHCX 33
-
8
-
-
8
-
- ns
- ns
8 ns
8 ns
tXLXL
tQVXH
serial port clock cycle time
see Figure 22
output data set-up to clock rising see Figure 22
edge time
16Tcy(CLK)
-
13Tcy(CLK)
-
1333
1083
- ns
- ns
tXHQX
output data hold after clock rising see Figure 22
edge time
-
Tcy(CLK) + 20
-
103 ns
tXHDX
input data hold after clock rising see Figure 22
edge time
-
0
-
0 ns
tXHDV
input data valid to clock rising
edge time
see Figure 22
150
-
150
- ns
SPI interface
fSPI
SPI operating frequency
slave
0
CCLK⁄6
0
2.0 MHz
master
-
CCLK⁄4
-
3.0 MHz
TSPICYC
SPI cycle time
slave
see Figure 24, 25,
26, 27
6⁄CCLK
-
500
- ns
master
4⁄CCLK
-
333
- ns
tSPILEAD
SPI enable lead time
2.0 MHz (slave)
see Figure 26, 27
250
-
250
- ns
P89LPC932A1_3
Product data sheet
Rev. 03 — 12 March 2007
© NXP B.V. 2007. All rights reserved.
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