TC1796
System Units (Vol. 1 of 2)
Program Memory Unit
User’s Manual 7-1 V2.0, 2007-07
PMU, V2.0
7 Program Memory Unit
The Program Memory Unit (PMU) shown in Figure 7-1 contains the following functional
units:
• 2 Mbyte of Program Flash Memory (PFLASH)
• 128 Kbyte of Data Flash Memory (DFLASH)
• 16 Kbyte of Boot ROM (BROM)
– 8 Kbyte Boot Code ROM
– 8 Kbyte Factory Test ROM
• Program Local Memory Bus Interface
• Emulation Memory Interface
Figure 7-1 PMU Block Diagram
7.1 Boot ROM
The functionality of the 16 Kbyte Boot ROM (BROM) is described in Chapter 4 (Reset
and Boot Operation) at Page 4-16.
MCB05641
Program
Memory Unit
(PMU)
EBU = External Bus Unit
PLMB = Program Local Memory Bus
DFLASH = Data Flash Memory
PFLASH = Program Flash Memory
BROM = Boot ROM
To/From Program
Local Memory Bus
64
PLMB Interface
Slave
ROM Control
To Emulation Memory
(TC1796ED only)
16 KB BROM
(8 KB for Boot
8 KB for Test)
Flash Interface Module
128 KB
DFLASH
2 MB
PFLASH
Emulation
Memory
Interface
64
64
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