87C528 Philips Semiconductors, 87C528 Datasheet - Page 17

• Manufacturer Part Number: 87C528
• Description: 80C51 8-bit microcontrollers 16K/32K/ 512 OTP/ I2C/ watchdog timer
• Manufacturer: Philips Semiconductors

*
Philips Semiconductors
NOTE:
1999 Jul 23
80C51 8-bit microcontrollers
16K/32K, 512 OTP, I
Ports 1.6 and 1.7 should be connected to V
exceed the I
CLOCK SIGNAL
Figure 10. I
(NC)
OL1
All other pins are disconnected
specifications.
V
DD
DD
RST
XTAL2
XTAL1
V
Test Condition, Active Mode
SS
2
C, watchdog timer
V
CC
0.45V
P1.6
P1.7
Figure 13. I
All other pins are disconnected. V
–0.5
V
DD
EA
P0
DD
(NC)
through resistors of sufficiently high value such that the sink current into these pins does not
Figure 12. Clock Signal Waveform for
I
DD
SU00169
I
DD
V
V
DD
DD
Tests in Active and Idle Modes
0.2V
t
DD
CHCL
0.7V
*
*
CC
Test Condition, Power Down Mode
t
RST
EA
XTAL2
XTAL1
V
CLCH
CC
SS
–0.1
= t
CHCL
17
t
CLCX
= 5ns
t
CLCL
CLOCK SIGNAL
P1.6
P1.7
V
DD
DD
P0
t
CHCX
= 2V to 5.5V
t
CLCH
Figure 11. I
I
SU00171
DD
(NC)
V
V
DD
DD
All other pins are disconnected
SU00009
*
*
DD
RST
XTAL2
XTAL1
V
EA
Test Condition, Idle Mode
SS
87C524/87C528
P1.6
P1.7
V
Product specification
P0
DD
SU00170
I
DD
V
V
DD
DD
*
*