TS80C51RA2-VCB Atmel, TS80C51RA2-VCB Datasheet - Page 67

• Manufacturer Part Number: TS80C51RA2-VCB
• Description: IC MCU 8BIT 256BYTE 40MHZ 44PLCC
• Manufacturer: Atmel
• Series: 80Cr

Specifications of TS80C51RA2-VCB

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40/30MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

10.5.5. External Data Memory Write Cycle
Rev. C - 06 March, 2001
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
AVWL
WHLH
WHLH
RLRH
RLDV
RHDX
RHDZ
AVDV
LLWL
LLWL
LLDV
RLAZ
PORT 0
PORT 2
PSEN
ALE
WR
Type
Max
Max
Max
Max
Max
Max
Max
Min
Min
Min
Min
Min
Min
Min
Min
Min
Table 41. AC Parameters for a Variable Clock: derating formula
OR SFR-P2
ADDRESS
Standard
3 T + x
Figure 26. External Data Memory Write Cycle
Clock
6 T - x
6 T - x
5 T - x
2 T - x
8 T - x
9 T - x
3 T - x
4 T - x
7 T - x
T + x
T - x
T - x
T - x
x
x
X2 Clock
1.5 T + x
0.5 T + x
2.5 T - x
4.5 T - x
1.5 T - x
0.5 T - x
3.5 T - x
0.5 T - x
0.5 T - x
3 T - x
3 T - x
2 T - x
4T -x
T - x
A0-A7
x
x
T
T
LLAX
AVWL
T
LLWL
-M
20
20
25
20
40
60
25
25
25
15
15
10
15
15
0
0
ADDRESS A8-A15 OR SFR P2
T
QVWX
-V
15
15
23
15
35
50
20
20
20
10
10
10
10
0
8
0
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
T
QVWH
T
DATA OUT
WLWH
-L
25
25
30
25
45
65
30
30
30
20
20
15
20
20
0
0
TS80C51RA2/RD2
Units
T
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
WHLH
T
WHQX
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