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M32C/86 Datasheet(PDF) 73 Page - Renesas Technology Corp

No. de pieza M32C/86
Descripción Electrónicos  RENESAS 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES
PDF  505 Pages
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Fabricante Electrónico  RENESAS [Renesas Technology Corp]
Página de inicio  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M32C/86 Datasheet(HTML) 73 Page - Renesas Technology Corp

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7. Processor Mode
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7.2 Setting of Processor Mode
The CNVSS pin state and the PM01 and PM00 bit settings in the PM0 register determine which processor
mode is selected. Table 7.2 lists processor mode after hardware reset. Table 7.3 lists processor mode
selected by PM01 and PM00 bit settings.
Table 7.2 Processor Mode after Hardware Reset
Table 7.3 Processor Mode Selected by the PM01 and PM00 bit Settings
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If the PM01 and PM00 bits are rewritten, the mode corresponding to the PM01 and PM00 bits is selected
regardless of CNVSS pin level.
Do not change the PM01 and PM00 bits to "012" (memory expansion mode) or "112" (microprocessor
mode) when the PM07 to PM02 bits in the PM0 register are being rewritten.
Do not enter microprocessor mode while the CPU is executing a program in the internal ROM.
Do not enter single-chip mode or memory expansion mode from microprocessor mode while the CPU is
executing a program in an external memory space, the same address assigned for the internal ROM.
The internal ROM cannot be accessed, regardless of PM01 and PM00 bit settings, when applying VCC to
the CNVSS pin and generating the hardware reset (hardware reset 1 or brown-out detection reset).
Figures 7.1 and 7.2 show the PM0 register and PM1 register. Figure 7.3 shows a memory map in each
processor mode.



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