p89c669 NXP Semiconductors, p89c669 Datasheet - Page 10

• Manufacturer Part Number: p89c669
• Description: P89c669 80c51 8-bit Microcontroller Family With Extended Memory; 96 Kb Flash With 2 Kb Ram
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 3:
9397 750 12299
Product data
Symbol
XTAL2
V
V
(NC/V
(NC/V
SS
DD
SS
DD
)
)
Pin description
Pin
PLCC
20
22
44
1
23
LQFP
14
16
38
39
17
…continued
Type
O
I
I
I
I
Description
Crystal 2: Output from the inverting oscillator amplifier.
Ground: 0 V reference.
Power Supply: This is the power supply voltage for normal operation as well as
Idle and Power-down modes.
No Connect/Ground: This pin is internally connected to V
connected externally, this pin must only be connected to the same V
pin 22. (Note: Connecting the second pair of V
However, they may be connected in addition to the primary V
improve power distribution, reduce noise in output signals, and improve
system-level EMI characteristics.)
No Connect/Power Supply: This pin is internally connected to V
P89C669. If connected externally, this pin must only be connected to the same
V
required. However, they may be connected in addition to the primary V
V
improve system-level EMI characteristics.)
DD
DD
as at pin 44. (Note: Connecting the second pair of V
pins to improve power distribution, reduce noise in output signals, and
Rev. 02 — 13 November 2003
80C51 8-bit microcontroller family with extended memory
SS
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
and V
DD
SS
SS
pins is not required.
and V
P89C669
SS
on the P89C669. If
and V
DD
DD
SS
on the
pins is not
DD
SS
as at
pins to
and
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