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Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 Manual De Usuario

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DEMO9S12XHY256
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128 KByte Flash Module (S12XFTMR128K1V1)
MC9S12XHY-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
619
19.1.2.3
Other Flash Module Features
•
No external high-voltage power supply required for Flash memory program and erase operations
•
Interrupt generation on Flash command completion and Flash error detection
•
Security mechanism to prevent unauthorized access to the Flash memory
19.1.3
Block Diagram
The block diagram of the Flash module is shown in
.
Figure 19-1. FTMR128K1 Block Diagram
Oscillator
Clock
Divider
Clock (XTAL)
Command
Interrupt
Request
FCLK
Protection
Security
Registers
Flash
Interface
16bit
internal
bus
sector 0
sector 1
sector 127
16Kx72
P-Flash
Error
Interrupt
Request
CPU
D-Flash
4Kx22
sector 0
sector 1
sector 31
Scratch RAM
384x16bits
Memory
Controller