Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller PLCC 52 (19.2x19.2) 8-Bit 60 MHz I/O number 36

43

AT89C51AC3

4383D–8051–02/08

Cross Flash Memory Access

(a) Depend upon general lock bit configuration.

Code executing from

Action

FM0

(user Flash)

FM1

(boot Flash)

FM0

(user Flash)

Read ok -

Load column latch ok -

Write - -

FM1

(boot Flash)

Read ok ok

Load column latch ok -

Write ok -

External

memory

EA = 0

Read (a) -

Load column latch - -

Write - -