Philips Semiconductors
Product specification
80C552/83C552
Single-chip 8-bit microcontroller
1998 Aug 13
9
Serial Control Register (S1CON) – See Table 2
CR2
ENS1
STA
STO
SI
AA
CR1
CR0
S1CON (D8H)
Bits CR0, CR1 and CR2 determine the serial clock frequency that is generated in the master mode of operation.
Table 2. Serial Clock Rates
BIT FREQUENCY (kHz) AT f
OSC
CR2
CR1
CR0
6MHz
12MHz
16MHz
24MHz
2
30MHz
2
f
OSC
DIVIDED BY
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
23
27
31
37
6.25
50
100
0.24 < 62.5
0 < 255
47
54
63
75
12.5
100
200
62.5
71
83.3
100
17
133
1
267
1
94
107
1
125
1
150
1
25
200
1
400
1
117 1
134
1
156
1
188
1
31
250
1
500
1
256
224
192
160
960
120
60
0.49 < 62.5
0 < 254
0.65 < 55.6
0 < 253
0.98 < 50.0
0 <251
1.22 < 52.1
0 < 250
96
×
(256 – (reload value Timer 1))
reload value Timer 1 in Mode 2.
NOTES:
1. These frequencies exceed the upper limit of 100kHz of the I
2
C-bus specification and cannot be used in an I
2
C-bus application.
2. At f
OSC
= 24MHz/ 30MHz the maximum I
2
C bus rate of 100kHz cannot be realized due to the fixed divider rates.
ABSOLUTE MAXIMUM RATINGS
1, 2, 3
PARAMETER
RATING
UNIT
Storage temperature range
–65 to +150
°
C
Voltage on any other pin to V
SS
–0.5 to +6.5
V
Input, output DC current on any single I/O pin
5.0
mA
Power dissipation
(based on package heat transfer limitations, not device power consumption)
NOTES:
1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any conditions other than those described in the AC and DC Electrical Characteristics section
of this specification is not implied.
2. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static
charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maxima.
3. Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to V
SS
unless otherwise
noted.
1.0
W
DEVICE SPECIFICATIONS
SUPPLY VOLTAGE (V)
FREQUENCY (MHz)
TYPE
MIN
MAX
MIN
MAX
TEMPERATURE RANGE (
°
C)
P83(0)C552EBx
4.5
5.5
3.5
16
0 to +70
P83(0)C552EFx
4.5
5.5
3.5
16
–40 to +85
P83(0)C552EHx
4.5
5.5
3.5
16
–40 to +125
P83(0)C552IBx
4.5
5.5
3.5
24
0 to +70
P83(0)C552IFx
4.5
5.5
3.5
24
–40 to +85
P83(0)C552KBx
4.5
5.5
3.5
30
0 to +70