參數(shù)資料
型號： SST89E52RD-40-C-PI
廠商： SILICON STORAGE TECHNOLOGY INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40
封裝： PLASTIC, MS-011AC, DIP-40
文件頁數(shù)： 33/81頁
文件大?。?/td> 935K
代理商： SST89E52RD-40-C-PI
Data Sheet
FlashFlex51 MCU
SST89E52RD2/RD / SST89E54RD2/RD / SST89E58RD2/RD
SST89V52RD2/RD / SST89V54RD2/RD / SST89V58RD2/RD
39
2006 Silicon Storage Technology, Inc.
S71255-05-000
5/06
5.3 Programmable Clock-Out
A 50% duty cycle clock can be programmed to come out
on P1.0. This pin, besides being a regular I/O pin, has two
alternate functions. It can be programmed:
1. to input the external clock for Timer/Counter 2, or
2. to output a 50% duty cycle clock ranging from 122
Hz to 8 MHz at a 16 MHz operating frequency (61
Hz to 4 MHz in 12 clock mode).
To configure Timer/Counter 2 as a clock generator, bit
C/#T2 (in T2CON) must be cleared and bit T20E in
T2MOD must be set. Bit TR2 (T2CON.2) also must be set
to start the timer.
The Clock-Out frequency depends on the oscillator fre-
quency and the reload value of Timer 2 capture registers
(RCAP2H, RCAP2L) as shown in this equation:
Oscillator Frequency
n x (65536 - RCAP2H, RCAP2L)
n =
2 (in 6 clock mode)
4 (in 12 clock mode)
Where (RCAP2H, RCAP2L) = the contents of RCAP2H
and RCAP2L taken as a 16-bit unsigned integer.
In the Clock-Out mode, Timer 2 roll-overs will not generate
an interrupt. This is similar to when it is used as a baud-rate
generator. It is possible to use Timer 2 as a baud-rate gen-
erator and a clock generator simultaneously. Note, how-
ever, that the baud-rate and the Clock-Out frequency will
not be the same.
TABLE
5-2: Timer/Counter 1
Mode
Function
TMOD
Internal
Control1
External
Control2
Used as
Timer
0
13-bit Timer
00H
80H
1
16-bit Timer
10H
90H
2
8-bit Auto-Reload
20H
A0H
3
Does not run
30H
B0H
Used as
Counter
0
13-bit Timer
40H
C0H
1
16-bit Timer
50H
D0H
2
8-bit Auto-Reload
60H
E0H
3
Not available
-
T5-2.0 1255
1. The Timer is turned ON/OFF by setting/clearing bit
TR1 in the software.
2. The Timer is turned ON/OFF by the 1 to 0 transition
on INT1# (P3.3) when TR1 = 1 (hardware control).
TABLE
5-3: Timer/Counter 2
Mode
T2CON
Internal
Control1
1. Capture/Reload occurs only on timer/counter overflow.
External
Control2
2. Capture/Reload occurs on timer/counter overflow and a 1
to 0 transition on T2EX (P1.1) pin except when Timer 2 is
used in the baud rate generating mode.
Used as
Timer
16-bit Auto-Reload
00H
08H
16-bit Capture
01H
09H
Baud rate generator
receive and transmit
same baud rate
34H
36H
Receive only
24H
26H
Transmit only
14H
16H
Used as
Counter
16-bit Auto-Reload
02H
0AH
16-bit Capture
03H
0BH
T5-3.0 1255
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相關代理商/技術參數(shù)
參數(shù)描述
SST89E52RD-40-C-PIE 功能描述:8位微控制器 -MCU 16KB+1KB 40MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
SST89E52RD-40-I-PI 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89E52RD-40-I-PIE 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89E54RC 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex MCU
SST89E54RC-33-C-NJE 功能描述:8位微控制器 -MCU 8-Bit 16K+1K Flash 33MHz 3/16-Bit Timer RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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