T89C5115-TDSIM Atmel, T89C5115-TDSIM Datasheet - Page 56
![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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Mode 0 (13-bit Timer)
Figure 24. Timer/Counter x (x= 0 or 1) in Mode 0
Mode 1 (16-bit Timer)
Figure 25. Timer/Counter x (x= 0 or 1) in Mode 1
Mode 2 (8-bit Timer with Auto-
Reload)
56
INTx#
See section “Clock”
INTx#
See section “Clock”
AT89C5115
CLOCK
CLOCK
FTx
Tx
FTx
Tx
TMOD Reg
GATEx
TMOD Reg
GATEx
÷ 6
÷ 6
TMOD Reg
TMOD Reg
C/Tx#
C/Tx#
Mode 0 configures Timer 0 as an 13-bit Timer which is set up as an 8-bit Timer (TH0
register) with a modulo 32 prescaler implemented with the lower five bits of TL0 register
(See Figure 24). The upper three bits of TL0 register are indeterminate and should be
ignored. Prescaler overflow increments TH0 register.
Mode 1 configures Timer 0 as a 16-bit Timer with TH0 and TL0 registers connected in
cascade (See Figure 25). The selected input increments TL0 register.
0
1
Mode 2 configures Timer 0 as an 8-bit Timer (TL0 register) that automatically reloads
from TH0 register (See Figure 26). TL0 overflow sets TF0 flag in TCON register and
reloads TL0 with the contents of TH0, which is preset by software. When the interrupt
request is serviced, hardware clears TF0. The reload leaves TH0 unchanged. The next
reload value may be changed at any time by writing it to TH0 register.
0
1
TCON Reg
TCON Reg
TRx
TRx
(8 bits)
(8 bits)
THx
THx
(8 bits)
(5 bits)
TLx
TLx
Overflow
Overflow
TCON Reg
TCON Reg
TFx
TFx
Timer x
Interrupt
Request
Timer x
Interrupt
Request
4128G–8051–02/08
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