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P8XC557E8 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
DATA SHEET
www.DataSheet4U.com
P8xC557E8
8-bit microcontroller
Product specification
File under Integrated Circuits, IC20
1999 Mar 12




P8XC557E8 pdf, 반도체, 판매, 대치품
Philips Semiconductors
8-bit microcontroller
Product specification
P8xC557E8
2.1 Electromagnetic Compatibility (EMC)
Primary attention is paid to the reduction of
electromagnetic emission of the microcontroller
P8xC557E8. The following features reduce the
electromagnetic emission and additionally improve the
electromagnetic susceptibility:
Four digital part supply voltage pins (VDD1 to VDD4) and
www.DataSheet4foUu.crodmigital ground pins (VSS1 to VSS4) are placed as
pairs of VDDn and VSSn at two adjacent pins, at each side
of the package.
Separated VDD pins for the internal logic and the port
buffers.
Internal decoupling capacitance improves the EMC
radiation behaviour and the EMC immunity.
External capacitors should be connected across
associated VDDn and VSSn pins (i.e. VDD1 and VSS1).
Lead length should be as short as possible. Ceramic
chip capacitors are recommended (100 nF).
2.2 Recommendation on ALE
For applications that require no external memory or
temporarily no external memory: the ALE output signal
(pulses at a frequency of 16 × fOSC) can be disabled under
software control (bit RFI; SFR: PCON.5); if disabled, no
ALE pulse will occur. ALE pin will be pulled down
internally, switching an external address latch to a quiet
state. The MOVX instruction will still toggle ALE (external
Data Memory is accessed). ALE will retain its normal HIGH
value during Idle mode and a LOW value during
Power-down mode while in the ‘RFI reduction mode’.
Additionally during internal access (EA = 1) ALE will toggle
normally when the address exceeds the internal Program
Memory size. During external access (EA = 0) ALE will
always toggle normally, whether the flag ‘RFI’ is set or not.
3 ORDERING INFORMATION
TYPE NUMBER
NAME
PACKAGE
DESCRIPTION
P80C557E8EFB(1)
P83C557E8EFB/nnn(2)
P87C557E8EFB(3)
QFP80
plastic quad flat package;
80 leads (lead length 1.95 mm);
body 14 × 20 × 2.8 mm
Notes
1. ROMless type.
2. ROM coded type; ‘nnn’ denotes the ROM code number.
3. EPROM/OTP type.
FREQUENCY TEMPERATURE
VERSION RANGE (MHZ) RANGE (°C)
SOT318-2 3.5 to 16
40 to +85
1999 Mar 12
4

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P8XC557E8 전자부품, 판매, 대치품
Philips Semiconductors
8-bit microcontroller
6 PINNING INFORMATION
6.1 Pinning diagram
handbook, full pagewidth
www.DataSheet4U.com
Vref(n)(A) 1
Vref(p)(A) 2
VSSA1 3
VDDA1 4
P5.7/ADC7 5
P5.6/ADC6 6
P5.5/ADC5 7
P5.4/ADC4 8
P5.3/ADC3 9
P5.2/ADC2 10
P5.1/ADC1 11
P5.0/ADC0 12
VSS1 13
VDD1 14
ADEXS 15
PWM0 16
PWM1 17
EW 18
P4.0/CMSR0 19
P4.1/CMSR1 20
P4.2/CMSR2 21
P4.3/CMSR3 22
RSTOUT 23
P4.4/CMSR4 24
P8xC557E8
Product specification
P8xC557E8
64 ALE/PROG (1)
63 PSEN
62 P2.7/A15
61 P2.6/A14
60 P2.5/A13
59 P2.4/A12
58 P2.3/A11
57 P2.2/A10
56 P2.1/A9
55 P2.0/A8
54 VSS3
53 VDD3
52 XTAL1
51 XTAL2
50 n.c.
49 n.c.
48 P3.7/RD
47 P3.6/WR
46 P3.5/T1
45 P3.4/T0
44 P3.3/INT1
43 P3.2/INT0
42 P3.1/TXD
41 P3.0/RXD
MHI025
(1) Only the P87C557E8 with this alternative function.
Fig.3 Pin configuration QFP80/SOT318 version.
1999 Mar 12
7

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P8XC557E8

8 BIT MICROCONTROLLER

NXP Semiconductors
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