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HT85F2240 bảng dữ liệu(PDF) 46 Page - Holtek Semiconductor Inc |
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HT85F2240 bảng dữ liệu(HTML) 46 Page - Holtek Semiconductor Inc |
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46 / 147 page  Rev. 1.10 46 of 147 ���� �1� �01� A/D Flash 8051 Core Low Pin Count MCU HT85F2230/HT85F2240 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 FMCR FMKEY FMAR0 FMAR1 FMAR� FMDR T�CON1 RSTSRC F0h B ADCR0 ADCR1 ADCR� ADPGA ADRL ADRH SRST E8h — — LVRCR LVDCR SCCR — LSOCR HSOCR E0h ACC — FMSR — IP1 IP1H IP� IP�H D8h — — — — — — — HFSCR D0h PSW — — — — PRM — — C8h T�CON IEN� CRCL CRCH TL� TH� IP� IP�H C0h IRCON CCEN CCL1 CCH1 — — — — B8h IP0 IP0H — — — — — IRCON� B0h P� — TBCR — — — P�M0 P�M1 A8h IEN0 IEN1 — — — — P�M0 P�M1 A0h P� — — — SRCR — P1M0 P1M1 98h — — IEN� — — — P0M0 P0M1 90h P1 P0WAKE DPS DPC — — WDTCR — 88h TCON TMOD TL0 TL1 TH0 TH1 — TMPRE 80h P0 SP DPL DPH DPL1 DPH1 WDTREL PCON Notes: “—”: �nimp�emented 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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