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| 型号： | SST89E54RD2A-40-C-TQJE |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | ROHS COMPLIANT, MS-026ACB, TQFP-44 |
| 文件页数： | 46/78页 |
| 文件大小： | 1671K |
| 代理商： | SST89E54RD2A-40-C-TQJE |
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50
Data Sheet
FlashFlex MCU
SST89E54RD2A/RDA / SST89E58RD2A/RDA
2008 Silicon Storage Technology, Inc.
S71339-02-000
02/08
8.3 Compare/Capture Modules
Each PCA module has an associated SFR with it. These
registers are: CCAPM0 for module 0, CCAPM1 for module
1, etc. Refer to “PCA Compare/Capture Module Mode Reg-
ister (CCAPMn)” on page 30 for details. The registers each
contain 7 bits which are used to control the mode each
module will operate in. The ECCF bit (CCAPMn.0 where n
= 0, 1, 2, 3, or 4 depending on module) will enable the CCF
flag in the CCON SFR to generate an interrupt when a
match or compare occurs. PWM (CCAPMn.1) enables the
pulse width modulation mode. The TOG bit (CCAPMn.2)
when set, causes the CEX output associated with the mod-
ule to toggle when there is a match between the PCA
counter and the module’s capture/compare register. When
there is a match between the PCA counter and the mod-
ule’s capture/compare register, the MATn (CCAPMn.3) and
the CCFn bit in the CCON register to be set.
Bits CAPN (CCAPMn.4) and CAPP (CCAPMn.5) deter-
mine whether the capture input will be active on a positive
edge or negative edge. The CAPN bit enables the negative
edge that a capture input will be active on, and the CAPP
bit enables the positive edge. When both bits are set, both
edges will be enabled and a capture will occur for either
transition. The last bit in the register ECOM (CCAPMn.6)
when set, enables the comparator function. Table 8-5
shows the CCAPMn settings for the various PCA functions.
There are two additional register associated with each of
the PCA modules: CCAPnH and CCAPnL. They are regis-
ters that hold the 16-bit count value when a capture occurs
or a compare occurs. When a module is used in PWM
mode, these registers are used to control the duty cycle of
the output. See Figure 8-1.
TABLE
8-4: PCA High and Low Register Compare/Capture Modules
Symbol
Description
Direct
Address
Bit Address, Symbol, or Alternative Port Function
RESET
Value
MSB
LSB
CCAP0H PCA Module 0
Compare/Capture
Registers
FAH
CCAP0H[7:0]
00H
CCAP0L
EAH
CCAP0L[7:0]
00H
CCAP1H PCA Module 1
Compare/Capture
Registers
FBH
CCAP1H[7:0]
00H
CCAP1L
EBH
CCAP1L[7:0]
00H
CCAP2H PCA Module 2
Compare/Capture
Registers
FCH
CCAP2H[7:0]
00H
CCAP2L
ECH
CCAP2L[7:0]
00H
CCAP3H PCA Module 3
Compare/Capture
Registers
FDH
CCAP3H[7:0]
00H
CCAP3L
EDH
CCAP3L[7:0]
00H
CCAP4H PCA Module 4
Compare/Capture
Registers
FEH
CCAP4H[7:0]
00H
CCAP4L
EEH
CCAP4L[7:0]
00H
T8-4.0 1339
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SST89E54RD2A-40-C-TQJE-T | 功能描述:8位微控制器 -MCU 4.5-5.5V FL Flex 8B 8051 Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| SST89E54RD2RD | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89E54RD2-RD | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89E54RD-33-C-PIE | 功能描述:8位微控制器 -MCU 24KB+1KB 33MHz RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| SST89E54RD-40-C-PI | 制造商:SST 制造商全称:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
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