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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HT85F2270 데이터시트(PDF) 52 Page - Holtek Semiconductor Inc |
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HT85F2270 데이터시트(HTML) 52 Page - Holtek Semiconductor Inc |
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52 / 226 page  Rev. 1.00 �� of ��6 �a� 1�� �01� Standard 8051 8-Bit Flash MCU HT85F2260/HT85F2270/HT85F2280 Special Function Registers To ensure successful operation of the microcontroller, certain internal registers, known as Special Function Registers or SFRs for short, are implemented in the Data Memory area. These registers ensure correct operation of internal functions such as timers, interrupts, etc., as well as external functions such as I/O data control. The SFRs are located at the address range 80H to FFH in the upper section and are addressed directly. All can be addressed by byte but some are also bit-addressable. The following table shows the SFR register list. Note that some of the registers are defined by standard 8051 protocol while others are defined by Holtek. Special Function Register Map High 5-bit Address Low 3-bit Address 0H 1H 2H 3H 4H 5H 6H 7H F8h F�CR F�KEY F�AR0 F�AR1 F�AR� F�DR T�CON1 RSTSRC F0h B ADCR0 ADCR1 ADCR� ADPGA ADRL ADRH SRST E8h SPCON I�CLK LVRCR LVDCR SCCR PLLCR LSOCR HSOCR E0h ACC SPSTA F�SR SPDAT IP1 IP1H IP� IP�H D8h I�CCON P� I�CDAT I�CADR SBRCON I�CSTA CP0CR CP1CR D0h PSW — — — — — — — C8h T�CON IEN� CRCL CRCH TL� TH� IP� IP�H C0h IRCON CCEN CCL1 CCH1 CCL� CCH� CCL� CCH� B8h IP0 IP0H S0RELH S1RELH — CPHCR CPICR IRCON� B0h P� P4 TBCR DACTRL DAL DAH P��0 P��1 A8h IEN0 IEN1 S0RELL — — — P��0 P��1 A0h P� T�CON TL� TH� SRCR SPPRE P1�0 P1�1 98h S0CON S0BUF IEN� S1CON S1BUF S1RELL P0�0 P0�1 90h P1 P0WAKE DPS DPC — — WDTCR — 88h TCON T�OD TL0 TL1 TH0 TH1 — T�PRE 80h P0 SP DPL DPH DPL1 DPH1 WDTREL PCON Notes: “—“: unimplemented Most of the Special Function Registers will be described in detail under the function that they are related to. In this section a register description is provided for those registers which are not described elsewhere. |
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