EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 215

• 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
Flash Control Register
The Flash Control register enables or disables memory access to Flash. I/O access to the
Flash control registers and I/O programming to Flash memory are still possible while
Flash memory space access is disabled.
The minimum access time of the internal Flash is 60 ns. The Flash control register must be
configured to provide the appropriate number of WAIT states based on the system clock
frequency of the eZ80F92 device. Default on RESET is for 4 WAIT states to be inserted
for Flash memory access.
Table 117. Flash Control Register
Bit
Reset
CPU Access
Note: R/W = Read/Write, R = Read Only.
Bit
Position
[7:5]
FLASH_WAIT
[4]
[3]
FLASH_EN
[2:0]
Value Description
000
001
010
011
100
101
110
111
0
0
1
000
(FLASH_CTRL= 00F8h)
R/W
0 Wait states are inserted when Flash is active.
1 Wait state is inserted when Flash is active.
2 Wait states are inserted when Flash is active.
3 Wait states are inserted when Flash is active.
4 Wait states are inserted when Flash is active.
5 Wait states are inserted when Flash is active.
6 Wait states are inserted when Flash is active.
7 Wait states are inserted when Flash is active.
Reserved
Flash Memory Access is disabled.
Flash Memory Access is enabled.
Reserved
P R E L I M I N A R Y
7
1
R/W
6
0
R/W
5
0
R
4
0
R/W
3
1
Product Specification
R
2
0
eZ80F92/eZ80F93
R
1
0
Flash Memory
R
0
0
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