P8XC557E4 NXP Semiconductors, P8XC557E4 Datasheet - Page 19
![The P80C557E4/P83C557E4/P89C557E4 (hereafter generically referred to as P8xC557E4) single-chip 8-bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family](/photos/41/53/415310/sot318-2_3d_sml.gif)
P8XC557E4
Manufacturer Part Number
P8XC557E4
Description
The P80C557E4/P83C557E4/P89C557E4 (hereafter generically referred to as P8xC557E4) single-chip 8-bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family
Manufacturer
NXP Semiconductors
Datasheet
1.P8XC557E4.pdf
(72 pages)
- Current page: 19 of 72
- Download datasheet (375Kb)
Philips Semiconductors
A/D Input Port Scan-Select Register ADPSS
The Special Function Register ADPSS contains control bits to select
the analog input channel(s) to be scanned for A/D conversion. The
reset value of ADPSS is (00000000). Its hardware address is E7H.
ADPSS is not bit addressable.
If all bits are ‘0’ then no A/D conversion can be started. If ADPSS is
written while an A/D conversion is in progress (ADSST in the
ADCON register is ‘1’) then the autoscan loop with the previous
selected analog inputs is completed first. The next autoscan loop is
performed with the new selected analog inputs.
A/D Result Registers ADRSLn and ADRSH:
The binary result code of A/D conversions is accessed by these
Special Function Registers. The result SFR are read only registers.
The read value after reset is indeterminate. Their data are not
affected by chip reset. They are not bit addressable.
There are 8 Special Function Registers ADRSLn
(ADRSL0...ADRSL7) – A/D Result Low byte – and one general SFR
ADRSH – A/D Result High byte – . Each of ADRSLn is associated
with the coincidently indexed analog input channel ADCn
(ADC0/P5.0...ADC7/P5.7). Reading an ADRSLn register by
software copies at the same time the two highest bits of the 10-bit
conversion result into two latches, thus preserving them until the
next read of any ADRSLn register. These two latches form bit
positions 0 and 1 of SFR ADRSH, the upper 6 bits of ADRSH are
always read as ’0’.
Thus it is ensured to get the 10-bit result of the same single A/D
conversion by reading any register ADRSLn first and after it the
register ADRSH.
1999 Mar 02
Single-chip 8-bit microcontroller
(n: 0...7)
ADPSS7–0
ADRSLn
ADRSH
ADPSS (E7H)
For each individual bit position:
ADRSn.7
ADPSS7
0
7
7
7
ADRSn.6
ADPSS6
Figure 16. A/D input port scan-select register.
0
6
6
6
Figure 17.
ADRSn.5
ADPSS5
0
5
5
5
0
1
A/D Result Registers.
= The corresponding analog input is skipped in the auto-scan loop.
= The corresponding analog input is included in the auto-scan loop.
ADRSn.4
ADPSS4
19
4
4
4
0
P83C557E4/P80C557E4/P89C557E4
ADRSn.3
ADPSS3
3
3
0
3
ADRSn.2
ADPSS2
0
2
2
2
ADRSn.9
ADRSn.1
ADPSS1
1
1
1
Product specification
ADRSn.0
ADRSn.8
ADPSS0
0
0
0
Related parts for P8XC557E4
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![LPC2420_60](/images/manufacturer_photos/0/4/487/nxp_semiconductors_tmb.jpg)
Part Number:
Description:
NXP Semiconductors designed the LPC2420/2460 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
![LPC2458](/photos/41/52/415299/sot570-3_3d_tmb.gif)
Part Number:
Description:
NXP Semiconductors designed the LPC2458 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
![LPC2468](/images/manufacturer_photos/0/4/487/nxp_semiconductors_tmb.jpg)
Part Number:
Description:
NXP Semiconductors designed the LPC2468 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
![LPC2470](/images/manufacturer_photos/0/4/487/nxp_semiconductors_tmb.jpg)
Part Number:
Description:
NXP Semiconductors designed the LPC2470 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
Manufacturer:
NXP Semiconductors
Datasheet:
![LPC2478](/images/manufacturer_photos/0/4/487/nxp_semiconductors_tmb.jpg)
Part Number:
Description:
NXP Semiconductors designed the LPC2478 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
Manufacturer:
NXP Semiconductors
Datasheet:
![XA-G30](/images/manufacturer_photos/0/4/487/nxp_semiconductors_tmb.jpg)
Part Number:
Description:
The Philips Semiconductors XA (eXtended Architecture) family of 16-bit single-chip microcontrollers is powerful enough to easily handle the requirements of high performance embedded applications, yet inexpensive enough to compete in the market for hi
Manufacturer:
NXP Semiconductors
Datasheet:
![XA-G37](/photos/41/52/415289/sot187-2_3d_tmb.gif)
Part Number:
Description:
The Philips Semiconductors XA (eXtended Architecture) family of 16-bit single-chip microcontrollers is powerful enough to easily handle the requirements of high performance embedded applications, yet inexpensive enough to compete in the market for hi
Manufacturer:
NXP Semiconductors
Datasheet:
![XA-S3](/images/manufacturer_photos/0/4/487/nxp_semiconductors_tmb.jpg)
Part Number:
Description:
The XA-S3 device is a member of Philips Semiconductors? XA(eXtended Architecture) family of high performance 16-bitsingle-chip microcontrollers
Manufacturer:
NXP Semiconductors
Datasheet:
![LH75401_LH75411_N](/photos/41/52/415297/sot486-1_3d_tmb.gif)
Part Number:
Description:
The NXP BlueStreak LH75401/LH75411 family consists of two low-cost 16/32-bit System-on-Chip (SoC) devices
Manufacturer:
NXP Semiconductors
Datasheet:
![LPC3130_3131](/photos/41/52/415299/sot570-3_3d_tmb.gif)
Part Number:
Description:
The NXP LPC3130/3131 combine an 180 MHz ARM926EJ-S CPU core, high-speed USB2
Manufacturer:
NXP Semiconductors
Datasheet:
![LPC3141FET180](/photos/41/52/415299/sot570-3_3d_tmb.gif)
Part Number:
Description:
The NXP LPC3141 combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
![LPC3143FET180](/photos/41/52/415299/sot570-3_3d_tmb.gif)
Part Number:
Description:
The NXP LPC3143 combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
![LPC3152FET208](/photos/41/53/415307/sot930-1_3d_tmb.gif)
Part Number:
Description:
The NXP LPC3152 combines an 180 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
![LPC3154FET208](/photos/41/53/415307/sot930-1_3d_tmb.gif)
Part Number:
Description:
The NXP LPC3154 combines an 180 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
![BUK714R1-40BT](/photos/41/53/415317/sot426_3d_tmb.gif)
Part Number:
Description:
Standard level N-channel enhancement mode Field-Effect Transistor (FET) in a plastic package using NXP High-Performance Automotive (HPA) TrenchMOS technology
Manufacturer:
NXP Semiconductors
Datasheet: