Memory, Power sources, Figure 15. female plug – Zilog EZ80F91GA User Manual
Page 117
UM024502-1012
Memory
ZGATE Embedded Security Development Kit
User Manual
107
Memory
On the ZGATE Embedded Security Development Board, the eZ80F91 MCU features the
following memory configurations:
•
8 KB on-chip SRAM
•
256 KB on-chip Flash
•
1 MB off-chip SRAM; U2 and U3 are accessible by chip selects CS1 and CS2
•
8 MB off-chip Flash: U11 is accessible by chip select CS0
To learn more about the operation of the eZ80F91 MCU’s internal memory, refer to the
Power Sources
The Board features two power source options. It can be powered by connecting Port P3
(USB Mini-B) to the USB port of the development PC using the USB A to USB mini-B
cable included in the Kit. The other option is to connect a female plug to an external
5 VDC source with at least 300–400mA of current to Port P2. A drawing of an optional
external power supply plug is shown in Figure 15.
When the Board is powered via a USB connection, communication with the development
PC can be established through the FT232RL chip (U8) to provide a USB-to-serial inter-
face. The UART0 block of the eZ80F91 MCU is connected to this chip.
Legend
A = 3.5 mm
B = 1.3 mm
C = 6 mm or longer
Figure 15. Female Plug