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Mini57
Apr. 06, 2017
Page 137 of 475
Rev.1.00
MINI5
7
S
E
RI
E
S
TECH
NIC
A
L R
E
F
E
RE
N
CE
MA
N
UA
L
29.5K Flash Memory Device
Programmable start
address
Application Program
(29.5-0.5*N)K bytes
DFBA[31:0]
0x0000_75FF
DataFlash
0.5*N
1
k bytes
Figure 6.4-3 Data Flash Shared with APROM
6.4.4.3
Security Program Memory (SPROM)
The Mini57 series provides security program memory for user to store instruction of security. It is
read/write
through ISP procedure and ICE, and this memory cannot be erased by “whole chip
erase command” but “page erase command”. The last byte of SPROM memory is used to identify
the code is secured or non-secured. Please refer to Table 6.4-4, which shows that security
program memory only allows CPU performs instruction fetch and page-erase operation when it is
secured code.
(The last byte= 0xFF): Non-secured code
ICE Debug
ISP/IAP
CPU Data
CPU Instruction
Whole chip erase
-
-
-
-
Page-erase
-
√
-
-
Program
-
√
-
-
Read
√
√
√
√
Содержание Mini57 Series
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