DS89C450-QNG+ Maxim Integrated Products, DS89C450-QNG+ Datasheet - Page 18

• 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: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Table 2. SFR Reset Value
REGISTER
ROMSIZE
SADDR0
SADDR1
SADEN0
SADEN1
RCAP2H
STATUS
RCAP2L
CKMOD
CKCON
SCON0
SCON1
T2MOD
T2CON
SBUF0
SBUF1
PCON
TCON
TMOD
ACON
DPH1
DPL1
DPH
EXIF
PMR
DPS
DPL
TH0
TH1
TL0
TL1
IP1
IP0
P0
SP
P1
P2
P3
TA
IE
ADDRESS
AAh
BAh
CAh
CBh
8Ah
8Bh
8Ch
8Dh
8Eh
9Dh
A0h
A8h
A9h
B0h
B1h
B8h
B9h
C0h
C1h
C2h
C4h
C5h
C7h
C8h
C9h
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
90h
91h
96h
98h
99h
BIT 7
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
1
0
0
0
1
1
1
0
0
0
0
1
1
0
1
0
1
0
0
BIT 6
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
1
0
0
0
1
0
0
0
0
0
0
1
0
0
1
0
1
0
0
DS89C430/DS89C450 Ultra-High-Speed Flash Microcontrollers
18 of 46
Special
BIT 5
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
1
0
0
1
0
1
0
0
Special
BIT 4
1
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
1
0
1
1
0
Special
BIT 3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
1
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
1
0
0
Special
BIT 2
1
1
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
0
0
0
0
0
1
0
0
1
0
1
0
0
Special
BIT 1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
BIT 0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
0
1
1
0
0
0
1
0
0
0
0
0
0
1
0
0
1
0
0
0
0