ADUC831BS Analog Devices Inc, ADUC831BS Datasheet - Page 66

• Manufacturer Part Number: ADUC831BS
• Description: IC ADC/DAC 12BIT W/MCU 52-MQFP
• Manufacturer: Analog Devices Inc
• Series: MicroConverter® ADuC8xxr

Specifications of ADUC831BS

• Rohs Status: RoHS non-compliant
• Core Processor: 8052
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: PSM, Temp Sensor, WDT
• Number Of I /o: 34
• Program Memory Size: 62KB (62K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 52-MQFP, 52-PQFP
• For Use With: EVAL-ADUC831QSZ - KIT DEV FOR ADUC831 QUICK START

ADuC831
TIMING SPECIFICATIONS
Parameter
CLOCK INPUT (External Clock Driven XTAL1)
t
t
t
t
t
t
NOTES
1
2
3
4
AC inputs during testing are driven at DV
For timing purposes, a port pin is no longer floating when a 100 mV change from load voltage occurs. A port pin begins to float when a 100 mV change from the
C
ADuC831 Machine Cycle Time is nominally defined as MCLKIN/12.
CK
CKL
CKH
CKR
CKF
CYC
a Logic 0.
loaded V
LOAD
4
for Port0, ALE, PSEN outputs = 100 pF; C
OH
/V
OL
level occurs.
XTAL1 Period
XTAL1 Width Low
XTAL1 Width High
XTAL1 Rise Time
XTAL1 Fall Time
ADuC831 Machine Cycle Time
DV
DD
– 0.5V
0.45V
DD
– 0.5 V for a Logic 1 and 0.45 V for a Logic 0. Timing measurements are made at V
1, 2, 3
0.2DV
0.2DV
TEST POINTS
LOAD
Figure 69. Timing Waveform Characteristics
DD
DD
(AV
for all other outputs = 80 pF unless otherwise noted.
– 0.1V
+ 0.9V
t
CKH
DD
= DV
Figure 68. XTAL 1 Input
DD
= 3.0 V or 5.0 V
20
Min
20
–66–
t
V
CKL
12 MHz
LOAD
Typ
83.33
1
V
V
LOAD
LOAD
10%. All specifications T
t
– 0.1V
+ 0.1V
CKR
Max
20
20
t
CK
REFERENCE
Min
62.5
20
20
POINTS
TIMING
Variable Clock
t
CKF
A
Typ
12t
= T
CK
MIN
V
V
LOAD
LOAD
to T
IH
min for a Logic 1 and V
Max
1000
20
20
MAX
– 0.1V
– 0.1V
, unless otherwise noted.)
V
LOAD
Unit
ns
ns
ns
ns
ns
µs
IL
Figure
REV. 0
68
68
68
68
68
max for