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P89LPC9321 bảng dữ liệu(PDF) 49 Page - NXP Semiconductors

tên linh kiện P89LPC9321
Giải thích chi tiết về linh kiện  8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash with 512-byte data EEPROM
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nhà sản xuất  NXP [NXP Semiconductors]
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P89LPC9321 bảng dữ liệu(HTML) 49 Page - NXP Semiconductors

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P89LPC9321_1
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 9 December 2008
49 of 70
NXP Semiconductors
P89LPC9321
8-bit microcontroller with accelerated two-clock 80C51 core
7.32 User sector security bytes
There are eight User Sector Security Bytes on the P89LPC9321. Each byte corresponds
to one sector. Please see the P89LPC9321
User manual for additional details.
7.33 PGA
Additional PGA module is integrated. The gain of PGA can be programmable to 2, 4, 8
and 16. Please refer to Table 10 “Static characteristics” for detailed specifications.
Register PGACON1 and PGACON1B are used to for PGA1 configuration. Register
PGA1TRIM2X4X and PGA1TRIM8X16X provide trim value of PGA1 gain level. As
power-on, default trim value for each gain setting is loaded into the PGA1 trim registers.
For accurate measurements, offset calibration is required.
Please see the P89LPC9321
User manual for detail configuration, calibration, and usage
information.
In Power-down mode or Total Power-down mode, the PGA1 does not function. If the
PGAs, is enabled, it will consume power. Power can be reduced by disabling the PGA1.



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