NXP Semiconductors MC9328MX1CVM15

Overview

MC9328MX1CVM15 from Freescale Semiconductor is an ARM920T™-based applications processor operating at 150 MHz, featuring integrated SDRAM controller, LCD controller, USB device interface, MMC/SD host controller, and dual SPI/UART/I²C peripherals. It targets portable information appliances requiring rich multimedia, low-power operation, and compact system integration.

For engineers reviewing the MC9328MX1CVM15 datasheet, MC9328MX1CVM15 pinout, MC9328MX1CVM15 application, or MC9328MX1CVM15 equivalent, key selection criteria include its 150 MHz CPU frequency, −40°C to +85°C industrial temperature grade, 256-pin MAPBGA–225 package, and support for boot from NAND/NOR flash via configurable BOOT[3:0] pins.

Technical Context

The MC9328MX1CVM15 implements the ARM920T core with Harvard architecture, 16 KB instruction and 16 KB data caches, and a Memory Management Unit (MMU). Its external interface module supports 32-bit data bus width, 25-bit address bus, and programmable wait-state timing for NOR/NAND flash, SRAM, and peripherals.

It integrates dedicated hardware accelerators including Bluetooth Accelerator (BTA) and Multimedia Accelerator (MMA), alongside analog signal processing (ASP) with 10-bit ADC inputs for touch screen and sensor interfaces. Power management includes dynamic voltage scaling and multiple low-power modes.

Key Specifications

Pinout & Package

MC9328MX1CVM15 uses a 256-contact Mold Array Process-Ball Grid Array (MAPBGA–225) package (Case 1304B-01), with exposed thermal pad and 1.0 mm ball pitch. Pin functions are highly multiplexed across 12 I/O banks, supporting flexible peripheral assignment via GPIO control registers.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar applications processor applications.

Compared with MC9328MX1VM15(R2), the MC9328MX1CVM15(R2) adds extended temperature resilience without sacrificing integration or software compatibility; versus i.MX21, it offers proven stability and lower BOM cost but lacks hardware crypto acceleration and newer peripheral IP.

Availability

MC9328MX1CVM15 is available at Aetrix Electronics and suitable for industrial handheld terminals, medical data loggers, and POS terminals requiring stable component supply across long product lifecycles and extended temperature operation.

Supply support for MC9328MX1CVM15 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and analog/mixed-signal ICs, focused on automotive, industrial, and networking markets.

The MC9328MX1CVM15 belongs to the i.MX1 family - Freescale's first-generation ARM9-based applications processors designed specifically for portable, battery-powered information appliances with rich multimedia and human interface requirements.

FAQ

What is the maximum SDRAM capacity supported by the MC9328MX1CVM15?

The MC9328MX1CVM15 SDRAM controller supports up to 128 MB of external SDRAM. This is achieved using 4 banks of 32 MB each, with address lines MA[9:0], SDBA[4:0], and control signals RAS/CAS/SDWE. The controller handles refresh cycles autonomously, reducing software overhead. MC9328MX1CVM15 does not support DDR or LPDDR memory types.

Does the MC9328MX1CVM15 support USB host functionality?

No, the MC9328MX1CVM15 only implements a USB 1.1 full-speed device controller. It cannot act as a USB host to connect peripherals like keyboards, mice, or flash drives. The USB interface provides USBD_VP/VM, USBD_VPO/VMO, and USBD_SUSPND signals exclusively for device-mode operation, as confirmed in Section 2 of the MC9328MX1 Technical Data Rev. 7.

How is boot source selected on the MC9328MX1CVM15?

Boot source selection on the MC9328MX1CVM15 is controlled by the external voltage levels applied to BOOT[3:0] pins (P12, R13, N12, P11) at reset. These pins are sampled during power-on reset to determine boot mode - e.g., NOR flash, NAND flash, or USB download. Pull-up/down resistors must be used per Table 1 in the datasheet; floating pins will cause undefined behavior. MC9328MX1CVM15 does not support boot from SD card natively.

What is the function of the BT1–BT13 pins on the MC9328MX1CVM15?

The BT1–BT13 pins on the MC9328MX1CVM15 implement the Bluetooth Accelerator (BTA) interface - a dedicated parallel bus for offloading Bluetooth baseband processing to an external RFIC. BT1–BT4 carry clock and control signals; BT5–BT13 handle data and status. These pins are not general-purpose I/O and require precise timing alignment with the external Bluetooth chip. MC9328MX1CVM15 does not include an integrated Bluetooth radio.

Can the MC9328MX1CVM15 drive a VGA-resolution LCD directly?

No, the MC9328MX1CVM15 LCD controller supports resolutions up to 640×480 (SVGA), but not native 640×480 VGA timing without external conversion. Its LD[0:15] data bus, FLM/VSYNC, LP/HSYNC, and LSCLK outputs are optimized for STN and TFT panels with built-in timing controllers (e.g., Sharp HR-TFT). Driving a raw VGA panel would require external timing generator and level-shifting circuitry beyond MC9328MX1CVM15 capabilities.