EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 205

• 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

Random Access Memory
PS015308-0404
The eZ80F92 features 8 KB (8192 bytes) single-port data Random Access Memory
(RAM) for general-purpose use. The eZ80F93 features 4KB (4096 bytes) general-purpose
RAM. RAM can be enabled or disabled, and it can be relocated to the top of any 64 KB
page in memory. Data is passed to and from RAM via the 8-bit data bus. On-chip RAM
operates with zero WAIT states.
For the eZ80F92, RAM occupies memory addresses in the range {RAM_ADDR_U[7:0],
E000h
RAM_ADDR_U set to
example, the RAM Address Upper Byte register, RAM_ADDR_U, is set to
Figure 45 is not drawn to scale, as RAM occupies only a very small fraction of the avail-
able 16 MB address space.
Figure 45.eZ80F92 On-Chip RAM Memory Addressing Example
For the eZ80F93 device, RAM occupies memory addresses in the range
{RAM_ADDR_U[7:0],
RAM is enabled with RAM_ADDR_U set to
on-chip RAM. In this example, the RAM Address Upper Byte register, RAM_ADDR_U,
is set to
of the available 16 MB address space.
Location
FFFFFFh
7AFFFFh
7AE000h
000000h
Memory
} to {RAM_ADDR_U[7:0],
7Ah
. Figure 45 is not drawn to scale, as RAM occupies only a very small fraction
General Purpose
RAM
8KB
FFh
F000h
. Figure 45 illustrates a memory map of on-chip RAM. In this
P R E L I M I N A R Y
} to {RAM_ADDR_U[7:0],
FFFFh
RAM_ADDR_U
7Ah
}. Following a RESET, RAM is enabled with
FFh
. Figure 46 illustrates a memory map of
F000h
Product Specification
}. Following a RESET,
Random Access Memory
eZ80F92/eZ80F93
7Ah
.
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