UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 26
UPSD3234AV-24U1T
Manufacturer Part Number
UPSD3234AV-24U1T
Description
Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
Manufacturer
STMicroelectronics
Datasheet
1.UPSD3234AV-24U1T.pdf
(170 pages)
- Current page: 26 of 170
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uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
Figure 14. State Sequence in uPSD323X Devices
26/170
(XTAL2)
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
Osc.
p1
S1
S1
S1
S1
S1
Read opcode
Read opcode
Read opcode
Read opcode
(MOVX)
p2
p1
S2
S2
S2
S2
S2
p2
p1
S3
S3
S3
S3
S3
p2
p1
S4
S4
S4
S4
S4
Read next
opcode and
discard
Read 2nd
Byte
Read next
opcode and
discard
Read next
opcode and
discard
p2
p1
S5
S5
S5
S5
S5
Addr
p2
Access External Memory
p1
S6
S6
S6
S6
S6
p2
p1
S1
S1
S1
No ALE
Read next
opcode
Read next
opcode
Read next
opcode and
discard
No Fetch
p2
Data
p1
S2
S2
S2
p2
p1
S3
S3
S3
p2
p1
S4
S4
S4
Read next
opcode and
discard
No Fetch
p2
p1
S5
S5
S5
p2
p1
S6
S6
S6
p2
Read next
opcode
Read next
opcode
AI06822
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