DS80C320-MCG+ Dallas Semiconductor, DS80C320-MCG+ Datasheet - Page 26

• Manufacturer Part Number: DS80C320-MCG+
• Description: Microcontroller, 8051 Comp., 4 8-Bit I/O Ports, 64K ROM/RAM, 25 MHz, 5 V, PDIP40
• Manufacturer: Dallas Semiconductor

Specifications of DS80C320-MCG+

• Eeprom Memory: 0 Bytes
• Input Output: 32
• Interface: UART
• Memory Type: ROMless
• Number Of Bits: 8
• Package Type: 40-pin PDIP
• Programmable Memory: 0 Bytes
• Ram Size: 256 Bytes
• Speed: 25 MHz
• Timers: 3-16-bit
• Voltage, Range: 4.25-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

NOTES FOR DS80C323 DC ELECTRICAL CHARACTERISTICS (continued)
All parameters apply to both commercial and industrial temperature operation unless otherwise noted. Specifications to -40°C
are guaranteed by design and are not production tested. Device operating range is 2.7V to 5.5V. DC electrical specifications are
for operation 2.7V to 3.3V.
6. RST = V
7. During a 0-to-1 transition, a one-shot drives the ports hard for two clock cycles. This measurement reflects port
8. Ports 1, 2, and 3 source transition current when being pulled down externally. It reaches its maximum at
9. V
10. Over the industrial temperature range, this specification has a maximum value of 200mA.
11. This is the current from an external circuit to hold a logic low level on an I/O pin while the corresponding port
12. Device operating range is 2.7V to 5.5V, however device is tested to 2.5V to ensure proper operation at
in transition mode.
approximately 2V.
Port 0 is dedicated as an address bus on the DS80C323. Peak current occurs near the input transition point of
the latch, approximately 2V.
latch bit is set to 1. This is only the current required to hold the low level; transitions from 1 to 0 on an I/O pin
will also have to overcome the transition current.
minimum V
IN
between ground and V
CC
. This condition mimics operation of pins in I/O mode.
RST
.
CC
- 0.3V. Not a high-impedance input. This port is a weak address latch because
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