ADUC842 Analog Devices, ADUC842 Datasheet - Page 81

• Manufacturer Part Number: ADUC842
• Description: Precision Analog Microcontroller: 16MIPS 8052 Flash MCU + 8-Ch 12-Bit ADC + Dual 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC842

• Mcu Core: 8052
• Mcu Speed (mips): 16
• Sram (bytes): 2304Bytes
• Gpio Pins: 34
• Adc # Channels: 8
• Other: PWM

Parameter
I
t
t
t
t
t
t
t
t
t
t
t
1
Input filtering on both the SCLOCK and SDATA inputs suppresses noise spikes less than 50 ns.
2
L
H
SHD
DSU
DHD
RSU
PSU
BUF
R
F
SUP
C COMPATIBLE INTERFACE TIMING
1
SDATA (I/O)
SCLK (I)
SCLOCK Low Pulse Width
SCLOCK 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 Conditionand a Start Condition
Rise Time of Both SCLOCK and SDATA
Fall Time of Both SCLOCK and SDATA
Pulse Width of Spike Suppressed
t
PSU
CONDITION
STOP
PS
t
BUF
CONDITION
START
t
DSU
t
SHD
MSB
1
Figure 90. I
t
DHD
2-7
2
Rev. 0 | Page 81 of 88
C Compatible Interface Timing
t
L
LSB
8
t
t
SUP
SUP
t
H
t
DSU
ACK
9
t
RSU
ADuC841/ADuC842/ADuC843
t
DHD
REPEATED
START
Min
1.3
0.6
0.6
100
0.6
0.6
1.3
S(R)
t
F
Max
0.9
300
300
50
MSB
t
F
1
t
R
t
R
Unit
µs
µs
µs
µs
µs
µs
µs
µs
ns
ns
ns