DS89C450-QNG Maxim Integrated Products, DS89C450-QNG Datasheet - Page 32

• Manufacturer Part Number: DS89C450-QNG
• Description: IC MCU FLASH 64KB 25MHZ 44-PLCC
• Manufacturer: Maxim Integrated Products
• Series: 89Cr

Specifications of DS89C450-QNG

• 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: 64KB (64K 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-LCC, 44-PLCC
• Processor Series: DS89C450
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: UART
• Maximum Clock Frequency: 33 MHz
• Number Of Programmable I/os: 4
• Number Of Timers: 3
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: DS89C450-KIT#
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

Table 7. Page Mode 1, Data Memory Cycle Stretch Values (PAGES1:PAGES0 = 00)
Table 8. Page Mode 1, Data Memory Cycle Stretch Values (PAGES1:PAGES0 = 01)
Table 9. Page Mode 1, Data Memory Cycle Stretch Values (PAGES1:PAGES0 = 10)
MD2:MD0
MD2:MD0
MD2:MD0
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
STRETCH
STRETCH
STRETCH
CYCLES
CYCLES
CYCLES
10
10
10
0
1
2
3
7
8
9
0
1
2
3
7
8
9
0
1
2
3
7
8
9
4X/ 2X , CD1,
4X/ 2X , CD1,
4X/ 2X , CD1,
CD0 = 100
CD0 = 100
CD0 = 100
0.25
0.75
1.75
2.75
3.75
4.75
5.75
6.75
0.25
0.75
1.75
2.75
3.75
4.75
5.75
6.75
0.5
RD / WR PULSE WIDTH (IN NUMBER OF OSCILLATOR CLOCKS)
RD / WR PULSE WIDTH (IN NUMBER OF OSCILLATOR CLOCKS)
RD/WR PULSE WIDTH (IN NUMBER OF OSCILLATOR CLOCKS)
1
2
3
4
5
6
7
DS89C430/DS89C450 Ultra-High-Speed Flash Microcontrollers
4X/ 2X , CD1,
4X/ 2X , CD1,
4X/ 2X , CD1,
CD0 = 000
CD0 = 000
CD0 = 000
32 of 46
11.5
13.5
11.5
13.5
0.5
1.5
3.5
5.5
7.5
9.5
0.5
1.5
3.5
5.5
7.5
9.5
10
12
14
1
2
4
6
8
4X/ 2X , CD1,
4X/ 2X , CD1,
4X/ 2X , CD1,
CD0 = X10
CD0 = X10
CD0 = X10
11
15
19
23
27
11
15
19
23
27
12
16
20
24
28
1
3
7
1
3
7
2
4
8
4X/ 2X , CD1,
4X/ 2X , CD1,
4X/ 2X , CD1,
CD0 = X11
CD0 = X11
CD0 = X11
11,264
15,360
19,456
23,552
27,648
11,264
15,360
19,456
23,552
27,648
12,288
16,384
20,480
24,576
28,672
1024
3072
7168
1024
3072
7168
2048
4096
8192