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MC9S12VR-Family - Data Sheet - Freescale Semiconductor

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17.1.2.3 Other Flash Module Features<br />

<strong>MC9S12VR</strong> <strong>Family</strong> Reference Manual, Rev. 2.8<br />

64 KByte Flash Module (S12FTMRG64K512V1)<br />

• No external high-voltage power supply required for Flash memory program and erase operations<br />

• Interrupt generation on Flash command completion and Flash error detection<br />

• Security mechanism to prevent unauthorized access to the Flash memory<br />

17.1.3 Block Diagram<br />

The block diagram of the Flash module is shown in Figure 17-1.<br />

Command<br />

Interrupt<br />

Request<br />

Error<br />

Interrupt<br />

Request<br />

Bus<br />

Clock<br />

CPU<br />

Clock<br />

Divider<br />

Flash<br />

Interface<br />

Registers<br />

Protection<br />

Security<br />

FCLK<br />

Memory<br />

Controller<br />

EEPROM<br />

256x22<br />

sector 0<br />

sector 1<br />

sector 127<br />

16bit<br />

internal<br />

bus<br />

Figure 17-1. FTMRG64K512 Block Diagram<br />

P-Flash<br />

16Kx39<br />

sector 0<br />

sector 1<br />

sector 127<br />

<strong>Freescale</strong> <strong>Semiconductor</strong> 457

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