參數(shù)資料
型號: C8051F221R
廠商: Silicon Laboratories Inc
文件頁數(shù): 56/146頁
文件大?。?/td> 0K
描述: IC 8051 MCU 8K FLASH 32LQFP
標(biāo)準(zhǔn)包裝: 1
系列: C8051F2xx
核心處理器: 8051
芯體尺寸: 8-位
速度: 25MHz
連通性: SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,WDT
輸入/輸出數(shù): 22
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 22x8b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 32-LQFP
包裝: 剪切帶 (CT)
其它名稱: 336-1009-1
C8051F2xx
Rev. 1.6
17
Figure 1.6. Comparison of Peak MCU Throughputs
1.2.
On-Board Memory
The CIP-51 has a standard 8051 program and data address configuration. It includes 256 bytes of data
RAM, with the upper 128 bytes dual-mapped. An optional 1024 bytes of XRAM is available on the 'F206,
'F226 and 'F236. Indirect addressing accesses the upper 128 bytes of general purpose RAM, and direct
addressing accesses the 128-byte SFR address space. The lower 128 bytes of RAM are accessible via
direct or indirect addressing. The first 32 bytes are addressable as four banks of general purpose regis-
ters, and the next 16 bytes can be byte addressable or bit addressable.
The MCU's program memory consists of 8 k + 128 bytes of Flash. This memory may be reprogrammed in-
system in 512 byte sectors, and requires no special off-chip programming voltage. The 512 bytes from
addresses 0x1E00 to 0x1FFF are reserved for factory use. There is also a user programmable 128-byte
sector at address 0x2000 to 0x207F, which may be useful as a table for storing software constants, nonvol-
atile configuration information, or as additional program space. See Figure 1.7 for the MCU system mem-
ory map.
WDT
CIP-51
Core
Missing
Clock
Detector
WDT
St
ro
b
e
(Software Reset)
/RST
+
-
VDD
Supply
Reset
Timeout
(wired-OR)
System Reset
Supply
Monitor
PRE
Reset
Funnel
+
-
CP0+
Comparator 0
CP0-
C0RSEF
EN
WDT
En
a
b
le
EN
MC
D
E
nab
le
SWRSF
System
Clock
MonEn
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