M052LDN Datasheet, PDF (41/86 Pages) List of Unclassifed Manufacturers – 32-bit Microcontroller

M051 DN/DE
6.5 External Bus Interface (EBI)
6.5.1 Overview
The NuMicro^® M05xxDN/DE LQFP-48 package has an external bus interface (EBI) for access
external device.
To save the connections between external device and this chip, EBI supports address bus and
data bus multiplex mode which is differentiated by address latch enable signal.
6.5.2 Features
The External Bus Interface has the following functions:
 Supports external devices with max. 64 KB size (8-bit data width) / 128 KB (16-bit data
width)
 Supports variable external bus base clock (MCLK) which based on HCLK
 Supports 8-bit or 16-bit data width
 Supports variable data access time (tACC), address latch enable time (tALE) and address
hold time (tAHD)
 Supports address bus and data bus multiplex mode to save the address pins
 Supports configurable idle cycle for different access condition: Write command finish (W2X),
Read-to-Read (R2R)
 Supports zero address hold time with read/write operation and write buffer for write
operation to enhance read/write performance
Oct. 05, 2015
Page 41 of 86
Rev 1.03