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P87C51RA2 Datasheet, PDF (54/67 Pages) NXP Semiconductors – 80C51 Central Processing Unit
Philips Semiconductors
80C51 8-bit microcontroller family 8KB/16KB/32KB/64KB OTP
with 512B/1KB RAM, low voltage (2.7 to 5.5 V), low power, high
speed (30/33 MHz)
Product data
P87C51RA2/RB2/RC2/RD2
VCC
RST
(NC)
CLOCK SIGNAL
XTAL2
XTAL1
VSS
VCC
VCC
ICC
VCC
P0
EA
RST
(NC)
CLOCK SIGNAL
XTAL2
XTAL1
VSS
VCC
ICC
VCC
VCC
P0
EA
SU00719
Figure 43. ICC Test Condition, Active Mode
All other pins are disconnected
SU00720
Figure 44. ICC Test Condition, Idle Mode
All other pins are disconnected
VCC–0.5
0.45V
0.7VCC
0.2VCC–0.1
tCHCL
tCLCX
tCHCX
tCLCH
tCLCL
SU00009
Figure 45. Clock Signal Waveform for ICC Tests in Active and Idle Modes
tCLCH = tCHCL = 5ns
VCC
ICC
RST
VCC
VCC
P0
EA
(NC)
XTAL2
XTAL1
VSS
SU00016
Figure 46. ICC Test Condition, Power Down Mode
All other pins are disconnected. VCC = 2 V to 5.5 V
2003 Jan 24
54