M0564LE4AE Datasheet, PDF (92/161 Pages) List of Unclassifed Manufacturers – 32-BIT MICROCONTROLLER

M0564
6.8 External Bus Interface (EBI)
6.8.1 Overview
The M0564 series is equipped with an external bus interface (EBI) for external device used. To
save the connections between external device and the M0564, EBI operating at address bus and
data bus multiplex mode. The EBI supports two chip selects that can connect two external
devices with different timing setting requirement.
6.8.2
Features
 Supports address bus and data bus multiplex mode to save the address pins
 Supports two chip selects with polarity control
 Supports external devices with maximum 1 MB size for each chip select
 Supports variable external bus base clock (MCLK) which based on HCLK
 Supports 8-bit or 16-bit data width for each chip select
 Supports variable address latch enable time (tALE)
 Supports variable data access time (tACC) and data access hold time (tAHD) for each
chip select
 Supports configurable idle cycle for different access condition: Idle of Write command
finish (W2X) and Idle of Read-to-Read (R2R)
 Supports continuous data access mode to bypass tASU, tALE and tLHD cycles for
improving EBI access
May 05, 2017
Page 92 of 161
Rev 1.00