ADUC7020 Analog Devices, ADUC7020 Datasheet - Page 9
ADUC7020
Manufacturer Part Number
ADUC7020
Description
Manufacturer
Analog Devices
Datasheet
1.ADUC7029.pdf
(96 pages)
Specifications of ADUC7020
Mcu Core
ARM7 TDMI
Mcu Speed (mips)
40
Sram (bytes)
8192Bytes
Gpio Pins
14
Adc # Channels
5
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TIMING SPECIFICATIONS
Table 2. External Memory Write Cycle
Parameter
CLK
t
t
t
t
t
t
t
t
t
t
t
t
t
1
MS_AFTER_CLKH
ADDR_AFTER_CLKH
AE_H_AFTER_MS
AE
HOLD_ADDR_AFTER_AE_L
HOLD_ADDR_BEFORE_WR_L
WR_L_AFTER_AE_L
DATA_AFTER_WR_L
WR
WR_H_AFTER_CLKH
HOLD_DATA_AFTER_WR_H
BEN_AFTER_AE_L
RELEASE_MS_AFTER_WR_H
See Table 78.
1
AD[16:1]
MSx
BHE
CLK
BLE
A16
WS
AE
RS
FFFF
t
t
AE_H_AFTER_MS
HOLD_ADDR_BEFORE_WR_L
t
t
MS_AFTER_CLKH
HOLD_ADDR_AFTER_AE_L
CLK
t
ADDR_AFTER_CLKH
9ABC
t
Min
0
4
8
0
AE
t
Figure 3. External Memory Write Cycle (See Table 78)
WR_L_AFTER_AE_L
t
BEN_AFTER_AE_L
t
DATA_AFTER_WR_L
t
WR
5678
Typ
UCLK
½ CLK
(XMxPAR[14:12] + 1) × CLK
½ CLK + (!XMxPAR[10]) × CLK
(!XMxPAR[8]) × CLK
½ CLK + (!XMxPAR[10] + !XMxPAR[8]) × CLK
(XMxPAR[7:4] + 1) × CLK
(!XMxPAR[8]) × CLK
½ CLK
(!XMxPAR[8] + 1) × CLK
Rev. D | Page 9 of 96
t
WR_H_AFTER_CLKH
t
HOLD_DATA_AFTER_WR_H
9ABE
ADuC7019/20/21/22/24/25/26/27/28/29
t
RELEASE_MS_AFTER_WR_H
Max
4
8
12
4
1234
Unit
ns
ns
ns
ns