S912XHY128F0VLM Datasheet, PDF (621/802 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

19.1.3 Block Diagram
The block diagram of the Flash module is shown in .
External Signal Description
Command
Interrupt
Request
Flash
Interface
Registers
Error
Interrupt
Request
Protection
Security
128 KByte Flash Module (S12XFTMR128K1V1)
16bit
internal
bus
P-Flash
16Kx72
sector 0
sector 1
sector 127
Oscillator
Clock (XTAL)
Clock
Divider _FCLK
Memory
CPU
Controller
Scratch RAM
384x16bits
D-Flash
4Kx22
sector 0
sector 1
sector 31
The Flash module contains no signals that connect off-chip.
19.2 Memory Map and Registers
This section describes the memory map and registers for the Flash module. Read data from unimplemented
memory space in the Flash module is undefined. Write access to unimplemented or reserved memory space
in the Flash module will be ignored by the Flash module.
MC9S12XHY-Family Reference Manual, Rev. 1.01
Freescale Semiconductor
621