Philips Semiconductors
Preliminary data
Low power, low price, low pin count (20 pin)
microcontroller with 4 kbyte OTP
87LPC764
t
XLXL
CLOCK
t
XHQX
t
QVXH
OUTPUT DATA
0
1
2
3
4
5
6
7
WRITE TO SBUF
t
XHDX
t
SET TI
VALID
XHDV
INPUT DATA
CLEAR RI
VALID
VALID
VALID
VALID
VALID
VALID
VALID
SET RI
SU01187
Figure 38. Shift Register Mode Timing
V
– 0.5
DD
0.2V + 0.9
DD
0.2 V – 0.1
DD
0.45V
t
CHCX
t
t
t
CLCH
CHCL
CLCX
t
C
SU01188
Figure 39. External Clock Timing
100
10
1
1000
6.0 V
5.0 V
6.0 V
5.0 V
100
4.0 V
3.3 V
2.7 V
4.0 V
3.3 V
2.7 V
10
10
100
100
1,000
Frequency (kHz)
10,000
Frequency (kHz)
SU01202
SU01203
Figure 40. Typical Idd versus frequency (low frequency
Figure 41. Typical Idd versus frequency (medium frequency
oscillator, 25°C)
oscillator, 25°C)
47
2001 Oct 26
NXP [ NXP ]
