P8XC557E8 Datasheet, PDF (36/84 Pages) NXP Semiconductors – 8 BIT MICROCONTROLLER

Philips Semiconductors
8-bit microcontroller
Product specification
P8xC557E8
Table 48 Selection of I²C-bus bit rate
CR2
1
1
1
1
0
0
0
0
CR1
0
0
1
1
0
0
1
1
CR0
0
1
0
1
0
1
0
1
BIT RATE (kbits/s) at f_clk
12 MHz
16 MHz
50
66.7
3.75
5
75
100
100
200⁽¹⁾
−
266.7⁽¹⁾
7.5
300⁽¹⁾
400⁽¹⁾
10
400⁽¹⁾
−
Note
1. These bit rates are for ‘fast-mode’ I²C-bus applications and cannot be used for standard I²C bit rates up to
100 kbits/s.
7
SLAVE ADDRESS
SDA
S1ADR
7
SHIFT REGISTER
ARBITRATION SYNC LOGIC
S1DAT
0
GC
0
SCL
BUS CLOCK GENERATOR
7
0
CONTROL REGISTER
S1CON
7
0
STATUS REGISTER
S1STA
MLB199
1999 Mar 12
Fig.13 Block diagram of I²C serial I/O interface.
36