P87C552 Datasheet

  • P87C552

  • 80C51 8-bit microcontroller

  • 393.52KB

  • Philips

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Philips Semiconductors
Preliminary specification
80C51 8-bit microcontroller
8K/256 OTP, 8 channel 10 bit A/D, I
2
C, PWM,
capture/compare, high I/O, low voltage (2.7V鈥?.5V), low power
P87C552
20
16
MAXIMUM ACTIVE MODE
12
I
DD
mA
8
TYPICAL ACTIVE MODE
4
MAXIMUM IDLE MODE
TYPICAL IDLE MODE
0
0
4
8
f (MHz)
12
16
SU01116
Figure 56. 16MHz Version Supply Current (I
DD
) as a Function of Frequency at XTAL1 (f
OSC
)
V
DD
V
DD
I
DD
P1.6
P1.7
V
DD
P0
EA
EW
V
DD
V
DD
RST
STADC
(NC)
CLOCK SIGNAL
XTAL2
XTAL1
AV
SS
V
SS
AV
ref鈥?/div>
SU00218
Figure 57. I
DD
Test Condition, Active Mode
All other pins are disconnected
1
1. Active Mode:
a. The following pins must be forced to V
DD
: EA, RST, Port 0, and EW.
b. The following pins must be forced to V
SS
: STADC, AV
ss
, and AV
ref鈥?/div>
.
c. Ports 1.6 and 1.7 should be connected to V
DD
through resistors of sufficiently high value such that the sink current into these pins
cannot exceed the I
OL1
spec of these pins.
d. The following pins must be disconnected: XTAL2 and all pins not specified above.
1999 Mar 30
70

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