DS89C420-QCL Maxim Integrated Products, DS89C420-QCL Datasheet - Page 46

• Manufacturer Part Number: DS89C420-QCL
• Description: IC MCU ULTRA 33MHZ HP 44-PLCC
• Manufacturer: Maxim Integrated Products
• Series: 89Cr

Specifications of DS89C420-QCL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 33MHz
• 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: 0°C ~ 70°C
• Package / Case: 44-LCC, 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

PIN CONFIGURATIONS
TOP VIEW
17
7
18
6
Semiconductor
DS89C420
PLCC
Dallas
1
TOP VIEW
40
28
P1.2/RXD1
P3.0/RXD0
P1.3/TXD1
P3.1/TXD0
P1.1/T2EX
P1.4/INT2
P1.5/INT3
P1.6/INT4
P1.7/INT5
P3.2/INT0
P3.3/INT1
39
29
P3.6/WR
P3.7/RD
P1.0/T2
P3.4/T0
P3.5/T1
XTAL2
XTAL1
RST
V
SS
10
11
12
13
14
15
16
17
18
19
20
9
1
2
3
4
5
6
7
8
DS89C420
46 of 47
DIP
TOP VIEW
39
38
37
36
35
34
33
32
31
29
28
27
26
25
24
23
22
21
40
30
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
EA/VPP
PSEN
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
V
ALE/PROG
CC
34
44
33
1
Semiconductor
DS89C420
TQFP
Dallas
11
23
12
22