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参数资料
| 型号： | SAK-XC164CS-32F20F |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封装： | 0.50 MM PITCH, GREEN, PLASTIC, TQFP-100 |
| 文件页数： | 66/81页 |
| 文件大小： | 1106K |
| 代理商： | SAK-XC164CS-32F20F |
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XC164-32
Derivatives
Electrical Parameters
Data Sheet
67
V1.1, 2006-08
4.4.2
On-chip Flash Operation
The XC164CS’s Flash module delivers data within a fixed access time (see Table 17).
Accesses to the Flash module are controlled by the PMI and take 1 + WS clock cycles,
where WS is the number of Flash access waitstates selected via bitfield WSFLASH in
register IMBCTRL. The resulting duration of the access phase must cover the access
time
t
ACC of the Flash array. Therefore, the required Flash waitstates depend on the
available speed grade as well as on the actual system frequency.
Note: The Flash access waitstates only affect non-sequential accesses. Due to
prefetching mechanisms, the performance for sequential accesses (depending on
the software structure) is only partially influenced by waitstates.
In typical applications, eliminating one waitstate increases the average
performance by 5% … 15%.
Example: For an operating frequency of 40 MHz (clock cycle = 25 ns), Standard devices
must be operated with 2 waitstates: ((2 + 1)
× 25 ns) ≥ 70 ns.
Grade A devices can be operated with 1 waitstate: ((1 + 1)
× 25 ns) ≥ 50 ns.
indicates the interrelation of waitstates, system frequency, and speed grade.
Note: The maximum achievable system frequency is limited by the properties of the
respective derivative, i.e. 40 MHz (or 20 MHz for xxx-32F20F devices).
Table 17
Flash Characteristics
(Operating Conditions apply)
Parameter
Symbol
Limit Values
Unit
Min.
Typ.
Max.
Flash module access time (Standard)
t
ACC
CC
–
701)
1) The actual access time is also influenced by the system frequency, so the frequency ranges are not fully linear.
See Table 18.
ns
Flash module access time (Grade A)
t
ACC
CC
–
ns
Programming time per 128-byte block
t
PR
CC
–
22)
2) Programming and erase time depends on the system frequency. Typical values are valid for 40 MHz.
5ms
Erase time per sector
t
ER
CC
–
2002)
500
ms
Table 18
Flash Access Waitstates
Required Waitstates
Frequency Range for
Standard Flash Speed
Frequency Range for
Flash Speed Grade A
0 WS (WSFLASH = 00B)
f
CPU ≤ 16 MHz
f
CPU ≤ 20 MHz
1 WS (WSFLASH = 01B)
f
CPU ≤ 28 MHz
f
CPU ≤ 40 MHz
2 WS (WSFLASH = 10B)
f
CPU ≤ 40 MHz
f
CPU ≤ 40 MHz
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SAK-XC164CS-32F20F BB-A | 功能描述:16位微控制器 - MCU 16BIT SNGL CHIP 5V 20MHz Flash RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
| SAK-XC164CS-32F20F BB-A TR | 制造商:Infineon Technologies AG 功能描述: |
| SAKXC164CS32F20FBB-A | 制造商:Infineon Technologies AG 功能描述: |
| SAK-XC164CS-32F40F | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SAK-XC164CS-32F40F BB | 制造商:Infineon Technologies AG 功能描述:MCU 16-Bit XC166 CISC/DSP/RISC 256KB Flash 2.5V/5V 100-Pin TQFP |
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