p89c668hbbd NXP Semiconductors, p89c668hbbd Datasheet - Page 46
p89c668hbbd
Manufacturer Part Number
p89c668hbbd
Description
80c51 8-bit Flash Microcontroller Family
Manufacturer
NXP Semiconductors
Datasheet
1.P89C668HBBD.pdf
(89 pages)
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P89C668HBBD
Manufacturer:
TI
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P89C668HBBD
Manufacturer:
PHILPS
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Part Number:
p89c668hbbd/00,557
Manufacturer:
NXP Semiconductors
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Philips Semiconductors
2002 Oct 28
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
SMOD = 0
Data
Shift
TxD
TI
Stop Bit Gen.
RxD
Shift
Bit Detector
Sample Times
RI
Clock
Clock
TX
RX
Overflow
Timer 1
Write to SBUF
2
SMOD = 1
16 Reset
RxD
Start Bit
Send
Start
Bit
S1P1
SBUF
Write
Interrupt
Serial
to
Port
D0
D0
Transition
Detector
1-to-0
Sample
D1
16
D1
D2
D2
D
CL
TB8
Figure 31. Serial Port Mode 3
S
Bit Detector
Q
TX Clock
Start
Read
SBUF
Start
D3
D3
16
RX Clock
Load
SBUF
Zero Detector
46
TX Control
RX Control
D4
D4
80C51 Internal Bus
80C51 Internal Bus
T1
R1
SBUF
Input Shift Register
SBUF
Shift
D5
D5
(9 Bits)
1FFH
P89C660/P89C662/P89C664/
Load
SBUF
D6
Data
Send
D6
Shift
Shift
D7
D7
TB8
RB8
Stop Bit
Stop Bit
P89C668
Product data
TxD
Transmit
Receive
SU00542
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