AN2136SC Cypress Semiconductor Corp, AN2136SC Datasheet - Page 60
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AN2136SC
Manufacturer Part Number
AN2136SC
Description
IC MCU 8051 8K RAM 24MHZ 44QFP
Manufacturer
Cypress Semiconductor Corp
Series
EZ-USB®r
Datasheet
1.AN2131SC.pdf
(334 pages)
Specifications of AN2136SC
Applications
USB Microcontroller
Core Processor
8051
Program Memory Type
ROMless
Controller Series
AN213x
Ram Size
8K x 8
Interface
I²C, USB
Number Of I /o
8
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
44-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
428-1309
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The EZ-USB 8-KB Masked ROM and 32-KB Masked ROM memory maps are shown in
Figures 3-6 and 3-7.
EZ-USB ROM versions contain program memory starting at 0x0000. In these versions,
the internal RAM is implemented as data-only memory.
Code for this ROM version can be developed and tested using the AN2131Q with an
external code memory (EA=1, Figure 3-5). As long as the 8051 limits internal RAM
access to 0x0000-0x07FF and accesses the EZ-USB registers and bulk data at 0x7B40-
0x7FFF, the code in the external memory will be the identical image of the code that will
ultimately be internal at 0x0000-0x1FFF in the ROM version.
EZ-USB TRM v1.9
3.5
FFFF
7B40
8000
2000
0800
07FF
0000
EZ-USB ROM Versions
Inside EZ-USB
Registers(RD,WR)
Data (RD,WR)
Note 1: OK to populate data memory here, but no RD# or WR# strobes are generated.
Note 2: OK to populate code memory here, but no PSEN# strobe is generated.
Figure 3-6. 8-KB ROM, 2-KB RAM Version
Memory(PSEN)
Chapter 3. EZ-USB Memory
Internal Code
(RD, WR)
(RD,WR)
External
Memory
(Note 1)
External
Memory
(Note 1)
Data
Data
Outside EZ-USB
External
Memory
(Note 2)
(PSEN)
Code
Page 3-7
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