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参数资料
| 型号： | DS87C530-ECL |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/45页 |
| 文件大小： | 0K |
| 描述： | IC MCU EPR/ROM W/RTC 33MZ 52TQFP |
| 标准包装： | 96 |
| 系列： | 87C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 33MHz |
| 连通性： | EBI/EMI，SIO，UART/USART |
| 外围设备： | 电源故障复位，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 16KB（16K x 8） |
| 程序存储器类型： | OTP |
| RAM 容量： | 1K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 52-TQFP |
| 包装： | 托盘 |
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DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock
17 of 45
POWER MANAGEMENT
Along with the standard Idle and power-down (Stop) modes of the standard 80C52, the
DS87C530/DS83C530 provide a new Power Management Mode. This mode allows the processor to
continue functioning, yet to save power compared with full operation. The DS87C530/DS83C530 also
feature several enhancements to Stop mode that make it more useful.
POWER MANAGEMENT MODE (PMM)
Power Management Mode offers a complete scheme of reduced internal clock speeds that allow the CPU
to run software but to use substantially less power. During default operation, the DS87C530/DS83C530
use four clocks per machine cycle. Thus the instruction cycle rate is (Clock/4). At 33MHz crystal speed,
the instruction cycle speed is 8.25MHz (33/4). In PMM, the microcontroller continues to operate but uses
an internally divided version of the clock source. This creates a lower power state without external
components. It offers a choice of two reduced instruction cycle speeds (and two clock sources - discussed
below). The speeds are (Clock/64) and (Clock/1024).
Software is the only mechanism to invoke the PMM. Table 4 illustrates the instruction cycle rate in PMM
for several common crystal frequencies. Since power consumption is a direct function of operating speed,
PMM 1 eliminates most of the power consumption while still allowing a reasonable speed of processing.
PMM 2 runs very slowly and provides the lowest power consumption without stopping the CPU. This is
illustrated in Table 5.
Note that PMM provides a lower power condition than Idle mode. This is because in Idle, all clocked
functions such as timers run at a rate of crystal divided by 4. Since wake-up from PMM is as fast as or
faster than from Idle and PMM allows the CPU to operate (even if doing NOPs), there is little reason to
use Idle mode in new designs.
Table 4. Machine Cycle Rate
CRYSTAL SPEED
(MHz)
FULL OPERATION
(4 CLOCKS)
(MHz)
PMM1
(64 CLOCKS)
(kHz)
PMM2
(1024 CLOCKS)
(kHz)
11.0592
2.765
172.8
10.8
16
4.00
250.0
15.6
25
6.25
390.6
24.4
33
8.25
515.6
32.2
Table 5. Typical Operating Current in PMM
CRYSTAL SPEED
(MHz)
FULL OPERATION
(4 CLOCKS)
(mA)
PMM1
(64 CLOCKS)
(mA)
PMM2
(1024 CLOCKS)
(mA)
11.0592
13.1
5.3
4.8
16
17.2
6.4
5.6
25
25.7
8.1
7.0
33
32.8
9.8
8.2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS87C530-ECL+ | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC 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 |
| DS87C530-ENL | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC 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 |
| DS87C530-ENL+ | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS87C530-KCL | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC 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 |
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