參數(shù)資料
型號(hào): 87LPC769
廠商: NXP Semiconductors N.V.
英文描述: Low power, low price, low pin count(20 pin) microcontroller with 4 kB OTP and 8-bit A/D,and DAC(帶4 kB OTP、8位A/D和D/A轉(zhuǎn)換的低功耗,低價(jià)格,少引腳(20引腳)的微控制器)
中文描述: 低功耗,低價(jià)格,低引腳數(shù)(20針)與4 KB的檢察官辦公室和8位A / D,和DAC(帶4 KB的檢察官辦公室,8位微控制器的A / D和的D / A轉(zhuǎn)換的低功耗,低價(jià)格,少引腳(20引腳)的微控制器)
文件頁數(shù): 42/61頁
文件大小: 275K
代理商: 87LPC769
Philips Semiconductors
Preliminary specification
87LPC769
Low power, low price, low pin count (20 pin)
microcontroller with 4 kB OTP 8-bit A/D, and DAC
2000 Apr 26
39
Table 11. Baud Rates, Timer Values, and CPU Clock Frequencies for SMOD1 = 1
Timer Co nt
Timer Count
Baud Rate
2400
4800
9600
19.2k
38.4k
57.6k
–1
0.2304
0.4608
0.9216
* 1.8432
* 3.6864
5.5296
–2
0.4608
0.9216
* 1.8432
* 3.6864
* 7.3728
–3
0.6912
1.3824
2.7648
5.5296
–4
0.9216
* 1.8432
* 3.6864
* 7.3728
–5
1.1520
2.3040
4.6080
9.2160
–6
1.3824
2.7648
5.5296
–7
1.6128
3.2256
6.4512
–8
* 1.8432
* 3.6864
* 7.3728
–9
2.0736
4.1472
8.2944
–10
2.3040
4.6080
9.2160
–11
2.5344
5.0688
–12
2.7648
5.5296
–13
2.9952
5.9904
–14
3.2256
6.4512
–15
3.4560
6.9120
–16
* 3.6864
* 7.3728
–17
3.9168
7.8336
–18
4.1472
8.2944
–19
4.3776
8.7552
–20
4.6080
9.2160
–21
4.8384
9.6768
NOTES TO TABLES 10 AND 11:
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
reflects the SMOD1 bit = 1.
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
give only lower baud rates are not shown.
4. Table entries marked with an asterisk (*) indicate standard crystal and ceramic resonator frequencies that may be obtained from many
sources without special ordering.
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