參數(shù)資料
型號: SST89V54RD2-33-C-NJE
廠商: Microchip Technology
文件頁數(shù): 55/92頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 24KB FLASH 44PLCC
標準包裝: 26
系列: FlashFlex®
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,WDT
輸入/輸出數(shù): 36
程序存儲器容量: 16KB(16K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 8K x 8
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 44-LCC
包裝: 管件
2011 Silicon Storage Technology, Inc.
DS25087A
10/11
59
FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
Not Recommended for New Designs
A Microchip Technology Company
16-Bit Software Timer Mode
The 16-bit software timer mode is used to trigger interrupt routines, which must occur at periodic inter-
vals. It is setup by setting both the ECOM and MAT bits in the module’s CCAPMn register. The PCA
timer will be compared to the module’s capture registers (CCAPnL and CCAPnH) and when a match
occurs, an interrupt will occur, if the CCFn (CCON SFR) and the ECCFn (CCAPMn SFR) bits for the
module are both set.
If necessary, a new 16-bit compare value can be loaded into CCAPnH and CCAPnL during the inter-
rupt routine. The user should be aware that the hardware temporarily disables the comparator function
while these registers are being updated so that an invalid match will not occur. Thus, it is recom-
mended that the user write to the low byte first (CCAPnL) to disable the comparator, then write to the
high byte (CCAPnH) to re-enable it. If any updates to the registers are done, the user may want to hold
off any interrupts from occurring by clearing the EA bit. (See Figure 26)
Figure 26:PCA Compare Mode (Software Timer)
1255 F25.0
CF
CR
CCF4
CCF3
CCF2
CCF1
CCF0
ECOMn CAPPn CAPNn
MATn
TOGn
PWMn ECCFn
CCON
CCAPMn
n=0 to 4
PCA Interrupt
CH
CL
CCAPnH
CCAPnL
PCA Timer/Counter
0
00
0
16-bit Comparator
Reset
Write to
CCAPnL
Write to
CCAPnH
10
Enable
Match
相關PDF資料
PDF描述
MMCX-P-178B/U CONN MMCX PLUG STRAIGHT RG178
VE-23T-IX-S CONVERTER MOD DC/DC 6.5V 75W
MMCX-P-FHSB CONN MMCX PLUG STRAIGHT FHSB
PIC24F08KA102T-I/ML IC PIC MCU FLASH 8KB 28-QFN
VI-213-IX-S CONVERTER MOD DC/DC 24V 75W
相關代理商/技術參數(shù)
參數(shù)描述
SST89V54RD2-33-C-NJE1 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89V54RD2-33-C-NJF2 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89V54RD2-33-C-PI 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89V54RD2-33-C-PIE1 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89V54RD2-33-C-PIF2 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU