P87LPC769 NXP Semiconductors, P87LPC769 Datasheet - Page 42

• Manufacturer Part Number: P87LPC769
• Description: The P87LPC769 is a 20-pin single-chip microcontroller designed forlow pin count applications demanding high-integration, low costsolutions over a wide range of performance requirements
• Manufacturer: NXP Semiconductors

1. Tables 6 and 7 apply to UART modes 1 and 3 (variable rate modes), and show CPU clock rates in MHz for standard baud rates.
2. Table 6 shows timer settings and CPU clock rates with the SMOD1 bit in the PCON register = 0 (the default after reset), while Table 7
3. The tables show all potential CPU clock frequencies up to 10 MHz that may be used for baud rates. Other CPU clock frequencies that would
4. Table entries marked with an asterisk (*) indicate standard crystal and ceramic resonator frequencies that may be obtained from many
Philips Semiconductors
Table 11. Baud Rates, Timer Values, and CPU Clock Frequencies for SMOD1 = 1
NOTES TO TABLES 10 AND 11:
2002 Mar 12
Low power, low price, low pin count (20 pin)
microcontroller with 4 kB OTP 8-bit A/D, and DAC
reflects the SMOD1 bit = 1.
give only lower baud rates are not shown.
sources without special ordering.
Timer Co nt
Timer Count
–10
–12
–13
–14
–15
–16
–17
–18
–19
–20
–21
–11
–1
–2
–3
–4
–5
–6
–7
–8
–9
* 1.8432
* 3.6864
0.2304
0.4608
0.6912
0.9216
1.1520
1.3824
1.6128
2.0736
2.3040
2.5344
2.7648
2.9952
3.2256
3.4560
3.9168
4.1472
4.3776
4.6080
4.8384
2400
* 1.8432
* 3.6864
* 7.3728
0.4608
0.9216
1.3824
2.3040
2.7648
3.2256
4.1472
4.6080
5.0688
5.5296
5.9904
6.4512
6.9120
7.8336
8.2944
8.7552
9.2160
9.6768
4800
* 1.8432
* 3.6864
* 7.3728
0.9216
2.7648
4.6080
5.5296
6.4512
8.2944
9.2160
9600
39
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Baud Rate
* 1.8432
* 3.6864
* 7.3728
5.5296
9.2160
19.2k
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–
–
–
–
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–
–
–
–
–
–
–
–
* 3.6864
* 7.3728
38.4k
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P87LPC769
Preliminary data
5.5296
57.6k
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