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参数资料
| 型号： | DS87C530-ECL |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/45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
10 of 45
Table 1. Special Function Register Locations (continued)
* Functions not present in the 80C52 are in bold.
REGISTER
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
ADDRESS
TL2
CCh
TH2
CDh
PSW
CY
AC
F0
RS1
RS0
OV
FL
P
D0h
WDCON
SMOD_1
POR
EPFI
PFI
WDIF
WTRF
EWT
RWT
D8h
ACC
E0h
EIE
—
ERTCI
EWDI
EX5
EX4
EX3
EX2
E8h
B
F0h
RTASS
F2h
RTAS
0
F3h
RTAM
0
F4h
RTAH
0
F5h
EIP
—
PRTCI
PWDI
PX5
PX4
PX3
PX2
F8h
RTCC
SSCE
SCE
MCE
HCE
RTCRE
RTCWE
RTCIF
RTCE
F9h
RTCSS
FAh
RTCS
0
FBh
RTCM
0
FCh
RTCH
FDh
RTCD0
FEh
RTCD1
FFh
NONVOLATILE FUNCTIONS
The DS87C530/DS83C530 provide two functions that are permanently powered if a user supplies an
external energy source. These are an on-chip RTC and a nonvolatile SRAM. The chip contains all related
functions and controls. The user must supply a backup source and a 32.768kHz timekeeping crystal.
REAL-TIME CLOCK
The on-chip RTC keeps time of day and calendar functions. Its time base is a 32.768kHz crystal between
pins RTCX1 and RTCX2. The RTC maintains time to 1/256 of a second. It also allows a user to read (and
write) seconds, minutes, hours, day of the week, and date. Figure 2 shows the clock organization.
Timekeeping registers allow easy access to commonly needed time values. For example, software can
simply check the elapsed number of minutes by reading one register. Alternately, it can read the complete
time of day, including subseconds, in only four registers. The calendar stores its data in binary form.
While this requires software translation, it allows complete flexibility as to the exact value. A user can
start the calendar with a variety of selections since it is simply a 16-bit binary number of days. This
number allows a total range of 179 years beginning from 0000.
The RTC features a programmable alarm condition. A user selects the alarm time. When the RTC reaches
the selected value, it sets a flag. This will cause an interrupt if enabled, even in Stop mode. The alarm
consists of a comparator that matches the user value against the RTC actual value. A user can select a
match for 1 or more of the sub-seconds, seconds, minutes, or hours. This allows an interrupt
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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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