參數(shù)資料
型號: DS89C430-ENL
英文描述: Ultra-High-Speed Flash Microcontrollers
中文描述: 超高速閃存微控制器
文件頁數(shù): 7/48頁
文件大?。?/td> 656K
代理商: DS89C430-ENL
DS89C430/DS89C440/DS89C450
7 of 48
Note 15:
The clock divide and crystal multiplier control bits in the PMR register determine the system clock frequency and the minimum/
maximum external clock speed. The term “1/t
CLCL
” used in the
AC Characteristics
variable timing table is determined from the
following table. The minimum/maximum external clock speed columns clarify that [(external clock speed) x (multipliers)] cannot
exceed the rated speed of the device. In addition, the use of the crystal multiplier feature establishes a minimum external speed.
External Clock Speed
4X/
2X
CD1
CD0
Number of External Clock
Cycles per System Clock
(1/t
CLCL
)
1/4
1/2
Reserved
1
1024
Min
Max
1
0
X
X
X
0
0
0
1
1
0
0
1
0
1
5MHz
10MHz
8.25MHz
16.5MHz
See AC Characteristics
See AC Characteristics
See AC Characteristics
See AC Characteristics
Note 16:
External MOVX instruction times are dependent upon the setting of the MD2, MD1, and MD0 bits in the clock control register. The
terms “t
STC1
, t
STC2
, t
STC3
” used in the variable timing table above are calculated through the use of the table given below.
MD2
0
0
0
0
1
1
1
1
MD1
0
0
1
1
0
0
1
1
MD0
0
1
0
1
0
1
0
1
MOVX Instruction Time
2 Machine Cycles
3 Machine Cycles
4 Machine Cycles
5 Machine Cycles
6 Machine Cycles
7 Machine Cycles
8 Machine Cycles
9 Machine Cycles
t
STC1
0 t
CLCL
2 t
CLCL
6 t
CLCL
10 t
CLCL
14 t
CLCL
18 t
CLCL
22 t
CLCL
26 t
CLCL
t
STC2
0 t
CLCL
1 t
CLCL
1 t
CLCL
1 t
CLCL
5 t
CLCL
5 t
CLCL
5 t
CLCL
5 t
CLCL
t
STC3
0 t
CLCL
0 t
CLCL
0 t
CLCL
0 t
CLCL
4 t
CLCL
4 t
CLCL
4 t
CLCL
4 t
CLCL
t
STC4
0 t
CLCL
0 t
CLCL
0 t
CLCL
0 t
CLCL
1 t
CLCL
1 t
CLCL
1 t
CLCL
1 t
CLCL
t
STC5
0 t
CLCL
1 t
CLCL
1 t
CLCL
1 t
CLCL
1 t
CLCL
1 t
CLCL
1 t
CLCL
1 t
CLCL
Note 17:
Maximum load capacitance (to meet the above timing) for Port 0, ALE,
PSEN
,
WR,
and
RD
is limited to 60pF. XTAL1 and XTAL2 load
capacitance are dependent upon the frequency of the selected crystal.
Figure 1. Nonpage Mode Timing
ALE
Port 0
Port 2
LSB
DATA
XTAL1
PSEN
RD
MSB
MSB
MSB
MSB
MSB
WR
LSB
LSB
LSB
LSB
DATA
MOVX
MOVX
OPCODE
t
CLCL
t
AVLL2
t
AVLL
t
LHLL
t
WLWH
t
LLAX2
t
LLWL
t
LLPL
t
PXIX
t
LLAX
t
LLIV
t
AVIV0
t
PLPH
t
PLIV
t
AVLL3
t
LLAX3
t
RLRH
t
PLAZ
t
WHLH
t
WHQX
t
QVWX
t
AVIV2
t
AVDV2
t
AVWL2
t
PXIZ
t
LLDV
t
AVDV0
t
RHDX
t
RHDZ
t
RLDV
t
AVWL0
相關PDF資料
PDF描述
DS89C430-MNL Ultra-High-Speed Flash Microcontrollers
DS89C430-QNL Ultra-High-Speed Flash Microcontrollers
DS89C440-ENL Ultra-High-Speed Flash Microcontrollers
DS89C440-MNL Ultra-High-Speed Flash Microcontrollers
DS89C440-QNL Ultra-High-Speed Flash Microcontrollers
相關代理商/技術參數(shù)
參數(shù)描述
DS89C430-ENL+ 功能描述:8位微控制器 -MCU Ultra-High-Speed Flash MCU 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
DS89C430-MNG 功能描述:8位微控制器 -MCU Ultra-High-Speed Flash MCU 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
DS89C430-MNG+ 功能描述:8位微控制器 -MCU Ultra-High-Speed Flash MCU 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
DS89C430MNL 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Ultra-High-Speed Flash Microcontrollers
DS89C430-MNL 功能描述:8位微控制器 -MCU Ultra-High-Speed Flash MCU 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