Z51F3220 Datasheet, PDF (12/54 Pages) Zilog, Inc. – 1 green LED to indicate USB power: D5

Z51F3220 Development Kit
User Manual
5
• USB interface providing power and communication to the Board through adjustable
LD0: U5
• Power supply level that can be adjusted with potentiometer R22
• Overcurrent protection circuit on the Board: U6 and D6
• External source of reference voltage (2.5V) for the on-chip ADC: VR1
• MCU current consumption measurement resistor R7 with test points J4 and J5
• Buzzer: U1
• 4-digit, 7-segment LCD panel
• Test points, headers and prototype area with two footprints
OCD Connector J1
VR1 On-Chip ADC
R3 and R6 Voltage Divider
USB-to-UART IC
Z51F3220 MCU
USB Power LED D5
Overcurrent LED D6
Figure 4. Z51F3220 Development Board: Highlighted Components
UM024307-1112
Introduction