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Z86C34 датащи(PDF) 30 Page - Zilog, Inc. |
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Z86C34 датащи(HTML) 30 Page - Zilog, Inc. |
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30 / 70 page ![]() Z86C34/C35/C36/C44/C45/C46 CMOS Z8® MCUs with ASCI UART ZiLOG 30 P R E L I M I N A R Y DS007601-Z8X0499 FUNCTIONAL DESCRIPTION (Continued) nal program and data memory from addresses 16384 /32768 to 65535. Expanded Register File (ERF). The Z8 register file is ex- panded to allow for additional system control registers, and for mapping of additional peripheral devices along with I/O ports into the register address area. The Z8 register address space R0 through R15 is implemented as 16 groups of 16 registers per group (Figure 19). These register groups are known as the Expanded Register File (ERF). Bits 7–4 of reg- ister RP select the working register group. Bits 3–0 of reg- ister RP select the expanded register group. Three system configuration registers reside in the Expanded Register File at Bank F (PCON, SMR, WDTMR). The rest of the Expand- ed Register is not physically implemented, and is open for future expansion. Figure 18. Data Memory Map 65535 16384/32768 0 External Data Memory NotAddressable 16383/32767 ROM Mode 65535 0 External Data Memory ROMless Mode |
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