ADUC842 Analog Devices, ADUC842 Datasheet - Page 80

• 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

ADuC841/ADuC842/ADuC843
Parameter
EXTERNAL DATA MEMORY WRITE CYCLE
t
t
t
t
t
t
t
t
t
WLWH
AVLL
LLAX
LLWL
AVWL
QVWX
QVWH
WHQX
WHLH
WR Pulse Width
Address Valid after ALE Low
Address Hold after ALE Low
ALE Low to RD or WR Low
Address Valid to RD or WR Low
Data Valid to WR Transition
Data Setup before WR
Data and Address Hold after WR
RD or WR High to ALE High
PORT 2 (O)
PSEN (O)
ALE (O)
WR (O)
t
AVLL
A16 A23
A0 A7
t
Figure 89. External Data Memory Write Cycle
LLAX
t
AVWL
t
LLWL
Rev. 0 | Page 80 of 88
Min
65
60
65
190
60
120
380
60
t
16 MHz Core Clk
QVWX
DATA
t
t
V8 A15
WLWH
QVWH
Max
130
Min
130
120
135
375
120
250
755
125
t
t
WHLH
WHQX
8 MHz Core Clock
Max
260
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns