參數(shù)資料
型號: P87LPC764BDH,518
廠商: NXP Semiconductors
文件頁數(shù): 29/60頁
文件大?。?/td> 0K
描述: IC 80C51 MCU 4K OTP 20-TSSOP
標準包裝: 2,500
系列: LPC700
核心處理器: 8051
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,UART/USART
外圍設備: 欠壓檢測/復位,LED,POR,WDT
輸入/輸出數(shù): 18
程序存儲器容量: 4KB(4K x 8)
程序存儲器類型: OTP
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 6 V
振蕩器型: 內(nèi)部
工作溫度: 0°C ~ 70°C
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
包裝: 帶卷 (TR)
其它名稱: P87LPC764BDH518
Philips Semiconductors
Product data
P87LPC764
Low power, low price, low pin count (20 pin)
microcontroller with 4 kbyte OTP
2003 Sep 03
34
Table 10. Baud Rates, Timer Values, and CPU Clock Frequencies for SMOD1 = 1
Timer Co nt
Baud Rate
Timer Count
2400
4800
9600
19.2k
38.4k
57.6k
115.2k
–1
0.2304
0.4608
0.9216
* 1.8432
* 3.6864
5.5296
* 11.0592
–2
0.4608
0.9216
* 1.8432
* 3.6864
* 7.3728
* 11.0592
–3
0.6912
1.3824
2.7648
5.5296
* 11.0592
16.5888
–4
0.9216
* 1.8432
* 3.6864
* 7.3728
* 14.7456
–5
1.1520
2.3040
4.6080
9.2160
* 18.4320
–6
1.3824
2.7648
5.5296
* 11.0592
–7
1.6128
3.2256
6.4512
12.9024
–8
* 1.8432
* 3.6864
* 7.3728
* 14.7456
–9
2.0736
4.1472
8.2944
16.5888
–10
2.3040
4.6080
9.2160
* 18.4320
–11
2.5344
5.0688
10.1376
–12
2.7648
5.5296
* 11.0592
–13
2.9952
5.9904
11.9808
–14
3.2256
6.4512
12.9024
–15
3.4560
6.9120
13.8240
–16
* 3.6864
* 7.3728
* 14.7456
–17
3.9168
7.8336
15.6672
–18
4.1472
8.2944
16.5888
–19
4.3776
8.7552
17.5104
–20
4.6080
9.2160
* 18.4320
–21
4.8384
9.6768
19.3536
NOTES TO TABLES 9 AND 10:
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 from 2400 to
115.2k baud.
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 20 MHz that may be used for baud rates from 9600 baud to 115.2k baud. 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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