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T89C5115-RATIM bảng dữ liệu(PDF) 54 Page - ATMEL Corporation |
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T89C5115-RATIM bảng dữ liệu(HTML) 54 Page - ATMEL Corporation |
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54 / 113 page ![]() 54 AT89C5115 4128F–8051–05/06 Table 36. PCON Register PCON (S:87h) Power Control Register Reset Value = 00X1 0000b Not bit addressable 76 54 32 1 0 SMOD1 SMOD0 - POF GF1 GF0 PD IDL Bit Number Bit Mnemonic Description 7SMOD1 Serial port Mode bit 1 Set to select double baud rate in mode 1, 2 or 3. 6SMOD0 Serial port Mode bit 0 Clear to select SM0 bit in SCON register. Set to select FE bit in SCON register. 5- Reserved The value read from this bit is indeterminate. Do not set this bit. 4POF Power-off Flag Clear to recognize next reset type. Set by hardware when V CC rises from 0 to its nominal voltage. Can also be set by software. 3GF1 General purpose Flag Cleared by user for general purpose usage. Set by user for general purpose usage. 2GF0 General purpose Flag Cleared by user for general purpose usage. Set by user for general purpose usage. 1PD Power-down Mode bit Cleared by hardware when reset occurs. Set to enter power-down mode. 0IDL Idle Mode bit Clear by hardware when interrupt or reset occurs. Set to enter idle mode. |
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