NUC029-FAE datasheet(38/75 Pages) NUVOTON

38 / 75 page

NUC029xDE

Apr 09, 2020

Page 38 of 75

Rev 1.04

6.4 Flash Memory Controller (FMC)

6.4.1 Overview

The NuMicro

NUC029xDE has 68K bytes on-chip embedded Flash for application program

memory (APROM) that can be updated through ISP procedure. The In-System-Programming

(ISP) function enables user to update program memory when chip is soldered on PCB. After chip

is powered on, Cortex

® -M0 CPU fetches code from APROM or LDROM decided by boot select

(CBS) in CONFIG0. By the way, the NuMicro

® NUC029xDE also provides additional Data Flash

for user to store some application dependent data.

The NuMicro

® NUC029xDE supports another flexible feature: configurable Data Flash size. The

Data Flash size is decided by Data Flash variable size enable (DFVSEN), Data Flash enable

(DFEN) in Config0 and Data Flash base address (DFBADR) in Config1. When DFVSEN is set to

1, the Data Flash size is fixed at 4K and the address is started from 0x0001_f000, and the

APROM size is become 64K. When DFVSEN is set to 0 and DFEN is set to 1, the Data Flash size

is zero and the APROM size is 68K bytes. When DFVSEN is set to 0 and DFEN is set to 0, the

APROM and Data Flash share 68K bytes continuous address and the start address of Data Flash

is defined by (DFBADR) in Config1.

6.4.2 Features



Runs up to 50 MHz with zero wait cycle for continuous address read access



All embedded flash memory supports 512 bytes page erase



68 KB application program memory (APROM)



4KB In-System-Programming (ISP) loader program memory (LDROM)



Configurable Data Flash size



512 bytes page erase unit



Supports In-Application-Programming (IAP) to switch code between APROM and

LDROM without reset



In-System-Programming (ISP) to update on-chip Flash

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