DEMO9S08LG32 Freescale Semiconductor, DEMO9S08LG32 Datasheet - Page 14

• Manufacturer Part Number: DEMO9S08LG32
• Description: DEMO BOARD FOR LG32 FAMILY MCU
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08LG32

• Contents: Board, CD
• Processor To Be Evaluated: MC9S08LG32x
• Data Bus Width: 8 bit
• Interface Type: USB
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: S08LG
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08LG32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

U S E R
Figure 9: VLL3_SEL Option Header
USER I/O
User I/O includes 2 potentiometer, 8 push button switches, and 8 green LEDs, and 1 piezo
buzzer for user I/O. The User1, User2, and Buz option header blocks enable or disable each
User I/O function individually.
Buzzer
The DEMO9S08LG32 target board provides an externally modulated piezo-buzzer for audible
applications. A push-pull drive circuit allows the target MCU to easily drive the buzzer at a
center frequency of 2300 Hz. Figure 10 below shows the USER enable position and
associated signal for the buzzer.
Figure 10: BUZ Option Header
G U I D E
NOTE: Silkscreen on VLL3_SEL is incorrect. The RV1 selection actually connects to the
NOTE: Use of variable Contrast Control requires that +12V input be applied at VIN connector.
NOTE: VLL3_SEL must be set to FIX if target board is powered from integrated USB-BDM.
VLL3_SEL
VLL3_SEL
• • •
• • •
Voltage input at VIN greater than +12V may damage the target board.
BUZ
CONTRAST POT and not the RV1 POT.
PTF3/TPM2CH5
Enable variable LCD Contrast Control
Set fixed contrast control
CAUTION
Enabled
ON
14
Disabled
OFF