NXP Semiconductors PXN2020 - Chapter 11 General-Purpose Static RAM (SRAM); 11.1 Introduction; 11.1.1 Block Diagram

PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor 11-1
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
Figure 11-1. Crossbar Arrangement Showing Embedded Memories (PXN20)
AHB Crossbar Switch
PFlash Controller
4 x 128
Page Buffer
SRAM
4 x 128
Page Buffer
Controller
SRAM
Controller
Peripheral
Bridge A
Peripheral
Bridge B
512 KB
2MB Flash
(with small blocks)
S0
64
S1
64
S2
64
S3
64
S4
64
S5
64
SRAM
(with ECC)
80 KB
SRAM
(with ECC)
64
64
128
(ECC)