DS89C420-ENG Maxim Integrated Products, DS89C420-ENG Datasheet - Page 6
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DS89C420-ENG
Manufacturer Part Number
DS89C420-ENG
Description
IC MCU ULTRA 25MHZ HP 44-TQFP
Manufacturer
Maxim Integrated Products
Series
89Cr
Datasheet
1.DS89C420-QCS.pdf
(47 pages)
Specifications of DS89C420-ENG
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
EBI/EMI, SIO, UART/USART
Peripherals
Power-Fail Reset, WDT
Number Of I /o
32
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DS89C420-ENG
Manufacturer:
Maxim Integrated
Quantity:
10 000
Port 2 Address to Valid
Data In (Note 2)
ALE Low to RD or WR Low
(Note 2)
Port 0 Address Valid to RD
or WR Low (Note 2)
Port 2 Address Valid to RD
or WR Low (Note 2)
Data Out Valid to WR
Transition (Note 1)
Data Hold After WR
(Note 1)
RD or WR High to ALE High
(Note 1)
*Specifications to -40°C are guaranteed by design and not production tested.
PARAMETER
SYMBOL
(t
(
(
t
(
t
t
t
t
t
t
t
AVDV2
t
t
AVWL0)
AVRL0
AVRL2
AVWL2)
QVWX
WHQX
WHLH)
RHLH
LLRL
LLWL)
0 + t
0.5t
t
+ t
STC2
MIN
CLCL
20
PAGE MODE 1
STC5
-5
STC2
- 2
1 CYCLE
- 8
- 5
0.5t
t
CLCL
t
STC2
+ t
MAX
t
CLCL
STC1
- 16 +
STC2
+ 6
+ 1
2t
0.5t
t
CLCL
+ t
STC2
MIN
t
STC2
CLCL
PAGE MODE 1
20
-5
STC5
- 8 +
- 2
2 CYCLE
- 5
2t
16 + t
1.5t
t
CLCL
STC2
MAX
t
STC2
CLCL
+ 8 +
+ 6
STC1
6 of 47
-
4t
1.5t
t
CLCL
+ t
STC2
MIN
t
CLCL
STC2
20
PAGE MODE 1
-5
STC5
- 8 +
- 2
4 CYCLE
- 5
4t
16 + t
3.5t
t
CLCL
STC2
MAX
t
STC2
CLCL
+ 8 +
+ 6
STC1
-
0.5t
1.5t
t
CLCL
t
STC2
CLCL
CLCL
MIN
t
t
t
STC2
STC2
STC5
20
PAGE MODE 2
-5
- 5 +
- 2
- 8 +
- 5 +
DS89C420 Ultra-High-Speed Microcontroller
0.5t
16 + t
3.0t
t
STC2
+ t
MAX
CLCL
CLCL
STC2
+ 6
STC1
+ 4
-
0.5t
1.5t
t
CLCL
t
STC2
NON-PAGE MODE
CLCL
CLCL
MIN
t
t
t
STC2
STC2
STC5
20
-5
- 5 +
- 2
- 8 +
- 5 +
0.5t
20 + t
3.5t
t
STC2
+ t
MAX
CLCL
CLCL
STC2
+ 6
STC1
+ 4
-
UNITS
ns
ns
ns
ns
ns
ns
ns