DEMOACKIT Freescale Semiconductor, DEMOACKIT Datasheet - Page 11

• Manufacturer Part Number: DEMOACKIT
• Description: KIT DEMO KIT FOR DC9S08A
• Manufacturer: Freescale Semiconductor
• Series: Flexis™r
• Type: MCUr

Specifications of DEMOACKIT

• Contents: Board, 2 Daughter Cards, Cable
• Processor To Be Evaluated: MCF51AC
• Data Bus Width: 32 bit
• Interface Type: USB
• Silicon Manufacturer: Freescale
• Core Architecture: Coldfire, HCS08
• Core Sub-architecture: Coldfire V1, HCS08
• Silicon Core Number: MCF51, MC9S08
• Silicon Family Name: Flexis - MCF51AC, Flexis - S08AC
• Rohs Compliant: Yes
• Tool Type: Demonstration Board
• Cpu Core: HCS08
• For Use With/related Products: MC9S08AC128, MCF51AC256
• For Use With: DEMOACEX - BOARD EXPANSION FOR DEMO KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

D E M O A C
RESET Switch
The RESET switch allow the manual application of the RESET* signal. Application of RESET
halts the current operation and initializes internal registers to their default state. The previous
operating state of the target device will be lost.
External reset may also be applied directly to the RESET * signal at connector J1A-4.
Reset LED
The RESET indicator will be ON for the duration of a valid RESET* signal. The RESET * sig-
nal is driven active while the MCU is in the RESET state.
Low Voltage Detect
The different AC MCU’s apply a Low Voltage Detect (LVD) module to detect under-voltage
conditions. The LVD may be configured to generate a RESET or an interrupt. Refer to the
target device Reference Manual for further details.
MEMORY
No external memory is applied to the DEMOAC board. Memory for application development is
internal to the target MCU. Refer to the target device Reference Manual for further details.
TIMING
The DEMOAC board provide a 4Mhz oscillator timing source for use with the target MCU. The
OSC_SEL option header allows this input to be disconnected if necessary. In default configu-
rations, the OSC_SEL option header is not installed and cut-traces provide the default connec-
tions.
To either disconnect the oscillator input or to apply an alternate frequency, remove the cut-
traces. To restore the default connection, install a 2x2 pin header and 2 shunts.
Table 1: OSC_SEL Option Header
CAUTION:
● ● EXTAL
● ● XTAL
U S E R
G U I D E
changes during application execution.
Communications with the target may be lost if clock frequency or baud rate
Oscillator or External Clock Input w/ cut-trace in default configurations
Oscillator Input w/ cut-trace in default configurations
11
A P R I L
1 0 ,
2 0 0 8