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P83C524 Datasheet(PDF) 41 Page - NXP Semiconductors

Part # P83C524
Description  8-bit microcontrollers
PDF  76 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

P83C524 Datasheet(HTML) 41 Page - NXP Semiconductors

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1997 Dec 15
41
Philips Semiconductors
Product specification
8-bit microcontrollers
P83C524; P80C528; P83C528
15.1
Power Control Register (PCON)
Special modes are activated by software via the PCON SFR. PCON is not bit addressable. The reset value of PCON is
0XXX0000.
Table 26 Power Control Register (address 87H)
Table 27 Description of the PCON bits
Notes
1. If logic 1s are written to PD and IDL at the same time, PD takes precedence.
2. User software should not write 1s to reserved bits. These bits may be used in future 80C51 family products to invoke
new features.
76543210
SMOD
−−−
GF1
GF0
PD
IDL
BIT
SYMBOL
FUNCTION
7
SMOD
Double Baud rate bit: when set to logic 1 the baud rate is doubled when Timer 1 is
used to generate baud rate, and the Serial Port is used in modes 1, 2 or 3.
6
−
reserved for future use
5
−
reserved for future use
4
−
reserved for future use
3
GF1
general-purpose flag bit
2
GF0
general-purpose flag bit
1PD
Power-down bit: setting this bit activates Power-down mode
0
IDL
Idle mode bit: setting this bit activates the Idle mode.



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