Memory
TMS320F2837xD Microcontroller Workshop - Architecture Overview 1 - 11
factory-default pins cannot be used. This information is programmed into the dual code security
module (DCSM). The flash memory is primarily used to store program code, but can also be
used to store static data. Notice that the external memory interface is assigned a region within
the memory map. The boot ROM and boot ROM vectors are located at the bottom of the memory
map.
Dual Code Security Module (DCSM)
Dual Code Security Module
Prevents reverse engineering and protects valuable
intellectual property
Various on-chip memory resources can be assigned to
either zone 1 or zone 2
Each zone has its own password
128-bit user defined password is stored in OTP
128-bits = 2
128
= 3.4 x 10
38
possible passwords
To try 1 password every 8 cycles at 200 MHz, it would take
at least 4.3 x 10
23
years to try all possible combinations!
Z1_CSMPSWD0
Z1_CSMPSWD1
Z1_CSMPSWD2
Z1_CSMPSWD3
Z2_CSMPSWD0
Z2_CSMPSWD1
Z2_CSMPSWD2
Z2_CSMPSWD3
Peripherals
The F28x7x is available with a variety of built in peripherals optimized to support control
applications. These peripherals vary depending on which F28x7x device selected.
• ePWM • SDFM
• eCAP • SPI
• eQEP • SCI
• CMPSS • I2C
• ADC • McBSP
• DAC
• Watchdog Timer
• DMA
• CLA
• CAN
• USB
• GPIO
• EMIF
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