DS80C310-MCG+ Dallas Semiconductor, DS80C310-MCG+ Datasheet - Page 13

• Manufacturer Part Number: DS80C310-MCG+
• Description: 8BIT CISC ROMLESS 25MHZ 5V 40PDIP
• Manufacturer: Dallas Semiconductor

Specifications of DS80C310-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: 4-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part

AC ELECTRICAL CHARACTERISTICS (Note 1)
Note 1:
Note 2:
Oscillator
Frequency
ALE Pulse Width
Port 0 Address Valid to ALE Low
Address Hold after ALE Low
ALE Low to Valid Instruction In
ALE Low to PSEN Low
PSEN Pulse Width
PSEN Low to Valid Instruction In
Input Instruction Hold after PSEN
Input Instruction Float after PSEN
Port 0 Address to Valid Instruction In
Port 2 Address to Valid Instruction In
PSEN Low to Address Float
are guaranteed by design and not product tested. AC electrical characteristics assume 50% duty cycle for the oscillator, and
are not 100% tested but are guaranteed by design. All signals characterized with load capacitance of 80pF except Port 0, ALE,
PSEN, and WR with 100pF. Interfacing to memory devices with float times (turn-off times) over 25ns can cause contention.
This does not damage the parts, but rather causes an increase in operating current. Port 2 and ALE timing changes in relation
to duty cycle variation.
All parameters apply to both commercial and industrial temperature operation unless otherwise noted. Specifications to -40°C
Address is held in a weak latch until overdriven by external memory.
PARAMETER
External Oscillator
External Crystal
SYMBOL
1/t
t
t
t
t
t
t
t
LLAX1
t
t
t
t
t
AVIV1
AVIV2
AVLL
LHLL
PLAZ
LLPL
PLPH
PXIX
LLIV
PLIV
PXIZ
CLCL
13 of 24
MIN
40
10
55
1
2
7
0
0
25MHz
(Note 2)
(Note 2)
MAX
25
25
56
41
26
71
81
1.5t
0.5t
0.5t
0.5t
2t
MIN
CLCL
18
13
VARIABLE
0
1
5
5
0
CLCL
CLCL
CLCL
CLCL
CLOCK
-5
-
-
-
-
2.5t
3.5t
(Note 2)
(Note 2)
2t
t
3t
MAX
CLCL
CLCL
CLCL
25
20
20
20
25
25
CLCL
CLCL
-5
-
-
-
-
UNITS
DS80C310
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns