ADUC7121 Analog Devices, ADUC7121 Datasheet - Page 10

• Manufacturer Part Number: ADUC7121
• Description: Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU
• Manufacturer: Analog Devices

Specifications of ADUC7121

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 32
• Adc # Channels: 9

ADuC7121
TIMING SPECIFICATIONS
Table 2. I
Parameter
t
t
t
t
t
t
t
t
t
t
t
Table 3. I
Parameter
t
t
t
t
t
t
t
t
t
t
L
H
SHD
DSU
DHD
RSU
PSU
BUF
R
F
SUP
L
H
SHD
DSU
DHD
RSU
PSU
BUF
R
F
SDAx
SCLx
2
2
C Timing in Fast Mode (400 kHz)
C Timing in Standard Mode (100 kHz)
t
PSU
Description
SCL low pulse width
SCL high pulse width
Start condition hold time
Data setup time
Data hold time
Setup time for repeated start
Stop condition setup time
Bus-free time between a stop condition and a start condition
Rise time for both SCL and SDA
Fall time for both SCL and SDA
Pulse width of spike suppressed
CONDITION
Description
SCLx low pulse width
SCLx high pulse width
Start condition hold time
Data setup time
Data hold time
Setup time for repeated start
Stop condition setup time
Bus-free time between a stop condition and a start condition
Rise time for both SCLx and SDAx
Fall time for both SCLx and SDAx
STOP
P
t
BUF
CONDITION
START
S
t
DSU
t
SHD
MSB
1
Figure 2. I
t
DHD
2 TO 7
2
Rev. 0 | Page 10 of 96
C-Compatible Interface Timing
t
t
H
L
LSB
8
t
SUP
t
DSU
t
SUP
ACK
9
t
RSU
t
DHD
REPEATED
Min
200
100
300
100
0
100
100
1.3
START
S(R)
Slave
Max
300
300
50
4.7
4.0
4.7
4.0
Min
4.0
250
0
4.7
t
F
MSB
t
F
1
Slave
Master
Typ
1360
1140
251,350
740
400
12.51350
400
200
t
R
t
R
Max
3.45
1
300
Unit
μs
ns
μs
ns
μs
μs
μs
μs
μs
ns
Unit
ns
ns
ns
ns
ns
ns
ns
μs
ns
ns
ns