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UPSD3233 Datasheet(PDF) 26 Page - STMicroelectronics

Part # UPSD3233
Description  Flash Programmable System Devices with 8032 Microcontroller Core
PDF  170 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3233 Datasheet(HTML) 26 Page - STMicroelectronics

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uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
26/170
Figure 14. State Sequence in uPSD323X Devices
Osc.
(XTAL2)
Read opcode
Read next
opcode
Read next
opcode and
discard
Read next
opcode and
discard
Read 2nd
Byte
No Fetch
No Fetch
No ALE
S1
S2
S3
S4
S5
S6
S1
S2
S3
S4
S5
S6
S1
S2
S3
S4
S5
S6
Read opcode
Read next
opcode
S1
S2
S3
S4
S5
S6
Read opcode
Read next
opcode
S1
S2
S3
S4
S5
S6
Read next
opcode and
discard
S1
S2
S3
S4
S5
S6
Read next
opcode and
discard
Read next
opcode and
discard
Read opcode
(MOVX)
Read next
opcode
S1
S2
S3
S4
S5
S6
S1
S2
S3
S4
S5
S6
Addr
Data
Access External Memory
AI06822
p1
p1
p1
p1
p1
p1
p1
p1
p1
p1
p1
p1
p2
p2
p2
p2
p2
p2
p2
p2
p2
p2
p2
p2
a. 1-Byte, 1-Cycle Instruction, e.g. INC A
b. 2-Byte, 1-Cycle Instruction, e.g. ADD A, adrs
c. 1-Byte, 2-Cycle Instruction, e.g. INC DPTR
d. 1-Byte, 2-Cycle MOVX Instruction



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