MC9328MX21SCVM Freescale, MC9328MX21SCVM Datasheet - Page 4

• Manufacturer Part Number: MC9328MX21SCVM
• Manufacturer: Freescale

Specifications of MC9328MX21SCVM

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Signal Descriptions
2
Table 2
Assignment and Package
manual.
The connections of the pins in
factory test signals that are not used in a normal application. Following is a list of these signals and how
they are to be terminated for proper operation of the i.MX21S processor:
4
•
•
•
•
•
•
•
•
•
— Three Universal Asynchronous Receiver/Transmitters (UARTx)
— Two Configurable Serial Peripheral Interfaces (CSPIx) for High Speed Data Transfer
— Inter-IC (I
— Two Synchronous Serial Interfaces (SSI) with Inter-IC Sound (I
— Digital Audio Mux
— One-Wire Controller
— Keypad Interface
Memory Expansion and I/O Card Support
— Two Multimedia Card and Secure Digital (MMC/SD) Host Controller Modules
Memory Interface
— External Interface Module (EIM)
— SDRAM Controller (SDRAMC)
— NAND Flash Controller (NFC)
— PCMCIA/CF Interface
Standard System Resources
— Clock Generation Module (CGM) and Power Control Module
— Three General-Purpose 32-Bit Counters/Timers
— Watchdog Timer
— Real-Time Clock/Sampling Timer (RTC)
— Pulse-Width Modulator (PWM) Module
— Direct Memory Access Controller (DMAC)
— General-Purpose I/O (GPIO) Ports
— Debug Capability
Signal Descriptions
CLKMODE[1:0]: To ensure proper operation, leave these signals as no connects.
OSC26M_TEST: To ensure proper operation, leave this signal as no connect.
EXT_48M: To ensure proper operation, connect this signal to ground.
EXT_266M: To ensure proper operation, connect this signal to ground.
TEST_WB[2:0]: These signals are also multiplexed with GPIO PORT E as well as alternate
keypad signals. If not utilizing these signals for GPIO functionality or for their other multiplexed
function, then configure as GPIO input with pull up enabled, and leave as a no connect.
TEST_WB[4:3]: To ensure proper operation, leave these signals as no connects.
identifies and describes the i.MX21S signals. Pin assignment is provided in
2
C) Bus Module
Information” and in the “Signal Multiplexing Scheme” table within the reference
Table 2
MC9328MX21S Technical Data, Rev. 1.3
depends solely upon the user application, however there are a few
2
S)
Freescale Semiconductor
Section 4, “Pin