W7100A-64QFN WIZnet, W7100A-64QFN Datasheet - Page 29
W7100A-64QFN
Manufacturer Part Number
W7100A-64QFN
Description
8-bit Microcontrollers - MCU 8051 CORE+HARDWIRED TCP/IP+MAC+PHY
Manufacturer
WIZnet
Datasheet
1.W7100A.pdf
(156 pages)
Specifications of W7100A-64QFN
Rohs
yes
Interface Type
UART
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2.2
Data FLASH. The Data FLASH can be used for saving user IP, MAC, subnet mask or port number.
Also the W7100A can address up to 16M bytes of external Data Memory. The figure below
shows the Data Memory map. This memory is accessed by MOVX instructions only. The
external memory can be extended by user.
2.2.1 Data Memory Wait States
fixed to the value stored inside CKCON register. Please refer to the section 2.5.10 ‘New &
Extended SFR’ for more detailed information.
2.3
to address line in standard 8051. And the second method is directly connecting all lines to
address line. Also user can use address pin and data pin as GPIO (General Purpose I/O). Please
refer to the section 10 ‘Electrical specification’ for the speed of external memory accessing.
Standard 1
Standard 2
The W7100A contains 64KB of embedded RAM, 64KB of TCPIPCore and the 255Byte of the
The Data Memory wait states are managed by CKCON(0x8E). The number of wait states is
The external address pin and data pin has two access modes. The first mode is to use latch
Direct 1
Direct 2
Mode
Data Memory
External Data Memory Access
EM[2:0]
001
011
101
111
Table 2.1 External memory access mode
Addr[7:0]/Data[7:0]
Addr[7:0]/Data[7:0]
Figure 2.5 Data Memory Map
Data[7:0]
Data[7:0]
P0
Addr[7:0]
Addr[7:0]
GPIO
GPIO
P1
Addr[15:8]
Addr[15:8]
Addr[15:8]
Addr[15:8]
P2
Ver. 1.12
Addr[23:16]
Addr[23:16]
GPIO
GPIO
P3
29
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