參數(shù)資料
型號(hào): T89C5115-TISUM
廠商: Atmel
文件頁數(shù): 66/113頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 16K 28SOIC
標(biāo)準(zhǔn)包裝: 27
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 20
程序存儲(chǔ)器容量: 16KB(16K x 8)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
包裝: 管件
其它名稱: 89C5115-TISUM
56
AT89C5115
4128G–8051–02/08
Mode 0 (13-bit Timer)
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.
Figure 24. Timer/Counter x (x= 0 or 1) in Mode 0
Mode 1 (16-bit Timer)
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.
Figure 25. Timer/Counter x (x= 0 or 1) in Mode 1
Mode 2 (8-bit Timer with Auto-
Reload)
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.
FTx
CLOCK
TRx
TCON Reg
TFx
TCON Reg
0
1
GATEx
TMOD Reg
÷
6
Overflow
Timer x
Interrupt
Request
C/Tx#
TMOD Reg
TLx
(5 bits)
THx
(8 bits)
INTx#
Tx
See section “Clock”
TRx
TCON Reg
TFx
TCON Reg
0
1
GATEx
TMOD Reg
Overflow
Timer x
Interrupt
Request
C/Tx#
TMOD Reg
TLx
(8 bits)
THx
(8 bits)
INTx#
Tx
FTx
CLOCK
÷
6
See section “Clock”
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