TS80C32X2-EDC Atmel Corporation, TS80C32X2-EDC Datasheet - Page 50
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TS80C32X2-EDC
Manufacturer Part Number
TS80C32X2-EDC
Description
8-bit Microcontroller 8 Kbytes ROM/OTP, ROMless
Manufacturer
Atmel Corporation
Datasheet
1.TS80C32X2-EDC.pdf
(54 pages)
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Clock Waveforms
Figure 26. Clock Waveforms
50
TS8xCx2X2
(INCLUDES INT0, INT1, TO, T1)
WRITE CYCLE
PORT OPERATION
MOV DEST PORT (P1, P2, P3)
SERIAL PORT SHIFT CLOCK
EXTERNAL PROGRAM MEMORY FETCH
P2 (EXT)
READ CYCLE
MOV DEST P0
INTERNAL
XTAL2
CLOCK
PSEN
ALE
WR
RD
P0
P2
P0
P0
P2
TXD (MODE 0)
SAMPLED
DATA
FLOAT
STATE4
P1P2
INDICATES ADDRESS TRANSITIONS
PCL OUT
DPL OR Rt
DPL OR Rt
Valid in normal clock mode. In X2 mode XTAL2 signal must be changed to XTAL2
divided by two.
This diagram indicates when signals are clocked internally. The time it takes the signals
to propagate to the pins, however, ranges from 25 to 125 ns. This propagation delay is
dependent on variables such as temperature and pin loading. Propagation also varies
from output to output and component. Typically though (T
WR propagation delays are approximately 50ns. The other signals are typically 85 ns.
Propagation delays are incorporated in the AC specifications.
P1P2
STATE5
P0 PINS SAMPLED
RXD SAMPLED
P1, P2, P3 PINS SAMPLED
OLD DATA
INDICATES DPH OR P2 SFR TO PCH TRANSITION
P1P2
STATE6
INDICATES DPH OR P2 SFR TO PCH TRANSITION
SAMPLED
FLOAT
DATA
NEW DATA
P1P2
STATE1
PCL OUT
P1P2
STATE2
THESE SIGNALS ARE NOT ACTIVATED DURING THE
EXECUTION OF A MOVX INSTRUCTION
DATA OUT
FLOAT
P1P2
STATE3
P1, P2, P3 PINS SAMPLED
SAMPLED
FLOAT
DATA
P1P2
PCL OUT (EVEN IF PROGRAM
MEMORY IS INTERNAL)
STATE4
PCL OUT (IF PROGRAM
MEMORY IS EXTERNAL)
A
PCL OUT
PCL OUT (IF PROGRAM
MEMORY IS EXTERNAL)
P1P2
= 25°C fully loaded) RD and
STATE5
P0 PINS SAMPLED
RXD SAMPLED
4184E–8051–09/02
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