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HT98R068-1 Datasheet(PDF) 26 Page - Holtek Semiconductor Inc |
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HT98R068-1 Datasheet(HTML) 26 Page - Holtek Semiconductor Inc |
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26 / 116 page  Rev. 1.10 �6 �e���a�� 1�� �01� Rev. 1.10 �7 �e���a�� 1�� �01� HT98R068-1 Two Way Radio 8-Bit MCU HT98R068-1 Two Way Radio 8-Bit MCU BP Register Bit 7 6 5 4 3 2 1 0 Name — — PMBP0 — — DMBP� DMBP1 DMBP0 R/W — — R/W — — R/W R/W R/W POR — — 0 — — 0 0 0 Bit 7 ~ 6 Unimplemented, read as “0” Bit 5 PMBP0: Program Memory Bank Pointer 0: Bank 0 1: Bank 1 Bit 4 ~ 3 Unimplemented, read as “0” Bit 2 ~ 0 DMBP2 ~ DMBP0: Data Memory Bank Pointer 000: Bank 0 001: Bank 1 010: Bank 2 011: Bank 3 100: Bank 4 101: Bank 5 110~111: Undefined Status Register – STATUS This 8-bit register contains the zero flag( Z), carry flag ( C), auxiliary carry flag( AC), overflow flag( OV), power down flag( PDF), and watchdog time-out flag( TO). These arithmetic/logical operation and system management flags are used to record the status and operation of the microcontroller. With the exception of the TO and PDF flags, bits in the status register can be altered by instructions like any other register. Any data written into the status register will not change the TO and PDF flags. In addition operations related to the status register may give different results from those intended. The TO flag can be affected only by system power-up, a WDT time-out or executing the “HALT” or “CLR WDT” instruction. The PDF flag can be affected only by executing the “HLAT” or “CLR WDT” instruction or a system power-up. The Z, OV, C, AC flags generally reflect the statuses of the latest operations. In addition, on entering the interrupt sequence or executing the subroutine call, the status register will not be pushed onto stack automatically. If the contents of status are important and the subroutine can corrupt the status register, the programmer has to take precautions to save it properly. |
Similar Part No. - HT98R068-1_13 |
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Similar Description - HT98R068-1_13 |
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