EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 214

• Manufacturer Part Number: EZ80F920120MOD
• Description: MODULE EZ80F92 512K 20MHZ
• Manufacturer: Zilog

Specifications of EZ80F920120MOD

• Module/board Type: Development Module
• Processor Series: EZ80F92x
• Core: eZ80
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 1 MB
• Interface Type: Cable
• Maximum Clock Frequency: 20 MHz
• Operating Supply Voltage: 0 V to 3.3 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP
• Development Tools By Supplier: eZ80F920200ZCOG
• Minimum Operating Temperature: 0 C
• For Use With/related Products: eZ80F92
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3157; EZ80F920120MOD

PS015308-0404
Table 115. Flash Data Register (FLASH_DATA = 00F6h)
Flash Address Upper Byte Register
The FLASH_ADDR_U register defines the upper 7 bits of the address for Flash memory.
Changing the value of FLASH_ADDR_U allows the on-chip 128 KB/64 KB Flash mem-
ory to be mapped to any location within the 16 MB linear address space of the eZ80F92
device. If the on-chip Flash memory is enabled, Flash address assumes priority over any
external Chip Selects. The external Chip Select signals are not asserted if the correspond-
ing Flash address is enabled. The internal Flash memory does not hold priority over inter-
nal SRAM.
Table 116. Flash Address Upper Byte Register (FLASH_ADDR_U = 00F7h)
Bit
Reset
CPU Access
Note: R/W = Read/Write.
Bit
Position
[7:0]
FLASH_DATA
Bit
Reset
CPU Access
Note: R/W = Read/Write; R = Read Only.
Bit
Position
[7:1]
FLASH_ADDR_U
0
Value Description
00h–
FFh
Value Description
00h–
FEh
0
R/W
Data value to be written to Flash during an I/O Write
operation.
R/W
P R E L I M I N A R Y
X
7
7
0
These bits define the upper byte of the Flash address. When
on-chip Flash is enabled, the Flash address space begins at
address {FLASH_ADDR_U, 0b, 0000h}. On-chip Flash is
prioritized over all external Chip Selects.
Reserved (enforces alignment on a 128 KB boundary).
R/W
R/W
6
X
6
0
R/W
R/W
X
5
5
0
R/W
R/W
X
4
4
0
R/W
R/W
X
3
3
0
Product Specification
R/W
R/W
X
2
2
0
eZ80F92/eZ80F93
R/W
R/W
X
1
1
0
Flash Memory
R/W
X
R
0
0
0
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