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HMS87C4260 Datasheet(PDF) 89 Page - Hynix Semiconductor

Part # HMS87C4260
Description  HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS
PDF  110 Pages
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Manufacturer  HYNIX [Hynix Semiconductor]
Direct Link  http://www.skhynix.com/kor/main.do
Logo HYNIX - Hynix Semiconductor

HMS87C4260 Datasheet(HTML) 89 Page - Hynix Semiconductor

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HMS81C4x60
November 2001 Ver 1.1
87
Figure 19-4 I2C status Register
I2C control register
It controls communication data format.
It controls SCL mode, SCL frequency, etc.
It contains 8bit data to transmit to external device when tr-
asmitter mode, or received 8bit data from external device
when receive mode.
Figure 19-5 I2C control Register
Figure 19-6 Interrupt request signal generation timing
0LRB
Last received bit.
it is used for receive confirmation. If
ACK is returned, LRB=0, or not 1.
Bit
No.
Name
Function
Table 19-1 Bit function
ICSR
ADDRESS : 00DAH
RESET VALUE : 0001 0000b
RW
RW
RW
RW
R
R
R
R
MST
TRX
BB
PIN
AL
AD0
ADRb
LRB
ICCR
ADDRESS : 00DBH
RESET VALUE : 0000 0000b
ESO
CCR3 CCR2 CCR1 CCR0
BSEL0
RW
RW
RW
RW
RW
RW
RW
BSEL1
ACKb
RW
SCL
PIN
I2C Request
Bit
No.
Name
Function
7
6
BSEL1
BSEL0
I2C connection control.
00: No connection
01: SCL0, SDA0
10: SCL1, SDA1
11: SCL0, SDA0, SCL1, SDA1
5ACK
If acknowlege clock is returned, this bit
is 0, or not 1.
4
ESO
I2C Bus interface use enable flag
0: Disabled
1: Enabled
3
2
1
0
CCR3
CCR2
CCR1
CCR0
SCL Frequency selection
SCL frequency = fex / (12 * CCR)
Value
fex = 4MHz
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Not allowed
Not allowed
333.3KHz
222.2KHz
166.6KHz
133.3KHz
111.1KHz
95.2KHz
83.3KHz
74.1KHz
66.6KHz
60.6KHz
55.5KHz
51.3KHz
47.6KHz
44.4KHz
Table 19-2 Bit function



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