PXN20RM Datasheet, PDF (319/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Chapter 11
General-Purpose Static RAM (SRAM)
11.1 Introduction
This chapter describes the general-purpose static RAM (SRAM) for the PXN20 family. The PXN20
provides 592 KB of SRAM. The PXN21 provides 128 KB of SRAM.
11.1.1 Block Diagram
S0
S1
64
64
4 x 128
4 x 128
Page Buffer Page Buffer
PFlash Controller
AHB Crossbar Switch
S2
S3
64
64
SRAM
Controller
SRAM
Controller
S4
64
Peripheral
Bridge A
S5
64
Peripheral
Bridge B
128
64
64
2 MB Flash
(with small blocks)
(ECC)
512 KB
SRAM
(with ECC)
80 KB
SRAM
(with ECC)
Figure 11-1. Crossbar Arrangement Showing Embedded Memories (PXN20)
Freescale Semiconductor
PXN20 Microcontroller Reference Manual, Rev. 1
11-1