T89C5115-TDSIM Atmel, T89C5115-TDSIM Datasheet - Page 68
![IC 8051 MCU FLASH 16K 24SOIC](/photos/6/70/67046/453-24-soic_sml.jpg)
T89C5115-TDSIM
Manufacturer Part Number
T89C5115-TDSIM
Description
IC 8051 MCU FLASH 16K 24SOIC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.T89C5115-RATIM.pdf
(113 pages)
Specifications of T89C5115-TDSIM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
20
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
24-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Watchdog Programming
68
AT89C5115
The three lower bits (S0, S1, S2) located into WDTPRG register permit to program the
WDT duration.
Table 49. Machine Cycle Count
To compute WD Timeout, the following formula is applied:
Note:
Find Hereafter computed Timeout values for f
Table 50. Timeout Computation
S2
0
0
0
0
1
1
1
1
S2
0
0
0
0
1
1
1
1
Svalue represents the decimal value of (S2 S1 S0)
FTime Out
S1
0
0
1
1
0
0
1
1
–
S1
0
0
1
1
0
0
1
1
=
---------------------------------------------------------------------------- -
6 2
×
S0
0
1
0
1
0
1
0
1
WDX2
S0
0
1
0
1
0
1
0
1
∧
X2
f
F
OSC
131.07 ms
262.14 ms
524.29 ms
osc
16.38 ms
32.77 ms
65.54 ms
(
1.05 s
2.10 s
2
=12 MHz
14
OSC
×
2
Svalue
XTAL = 12 MHz in X1 mode
)
f
Machine Cycle Count
OSC
196.56 ms
393.12 ms
786.24 ms
12.28 ms
24.57 ms
49.14 ms
98.28 ms
1.57 s
=16MHz
2
2
2
2
2
2
2
2
14
15
17
18
19
20
21
16
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
f
4128G–8051–02/08
OSC
157.28 ms
314.56 ms
629.12 ms
19.66 ms
39.32 ms
78.64 ms
9.82 ms
1.25 s
=20 MHz
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