DS87C530-ENL Maxim Integrated Products, DS87C530-ENL Datasheet - Page 4

• Manufacturer Part Number: DS87C530-ENL
• Description: IC MCU EPR/ROM W/RTC 33MZ 52TQFP
• Manufacturer: Maxim Integrated Products
• Series: 87Cr

Specifications of DS87C530-ENL

• 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: OTP
• 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: 52-TQFP, 52-VQFP
• Processor Series: DS87C530
• 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: 32
• 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
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No

Figure 1. Block Diagram
PIN DESCRIPTION
PLCC
1, 25
52
29
26
12
23
24
PIN
TQFP
18, 46
45
22
19
16
17
5
XTAL2
XTAL1
NAME
GND2
GND
V
RST
V
CC2
CC
+5V Processor Power Supply
Processor Digital Circuit Ground
+5V RTC Supply. V
RTC Circuit Ground
Reset Input. This pin contains a Schmitt voltage input to recognize external active
high reset inputs. The pin also employs an internal pulldown resistor to allow for a
combination of wired OR external reset sources. An RC is not required for power-up,
as the device provides this function internally.
Crystal Oscillator Pins. XTAL1 and XTAL2 provide support for parallel-resonant,
AT-cut crystals. XTAL1 acts also as an input if there is an external clock source in
place of a crystal. XTAL2 is the output of the crystal amplifier.
DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock
DS87C530/
DS83C530
4 of 45
CC2
is isolated from V
FUNCTION
CC
to isolate the RTC from digital noise.