參數(shù)資料
型號: EFM32G842F128
廠商: Energy Micro
文件頁數(shù): 103/136頁
文件大小: 0K
描述: IC MCU 32BIT 128KB FLASH 64LQFP
標(biāo)準(zhǔn)包裝: 1
系列: Gecko
核心處理器: ARM? Cortex?-M3
芯體尺寸: 32-位
速度: 32MHz
連通性: I²C,IrDA,智能卡,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,DMA,LCD,POR,PWM,WDT
輸入/輸出數(shù): 53
程序存儲器容量: 128KB(128K x 8)
程序存儲器類型: 閃存
RAM 容量: 16K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 3.8 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x12b,D/A 2x12b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-TQFP
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: 914-1028-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
69
www.energymicro.com
3.6.2.5 Examples
UMULL
R0, R4, R5, R6
; Unsigned (R4,R0) = R5 x R6
SMLAL
R4, R5, R3, R8
; Signed (R5,R4) = (R5,R4) + R3 x R8
3.6.3 SDIV and UDIV
Signed Divide and Unsigned Divide.
3.6.3.1 Syntax
SDIV{cond} {Rd,} Rn, Rm
UDIV{cond} {Rd,} Rn, Rm
where:
cond
is an optional condition code, see Section 3.3.7 (p. 43) .
Rd
is the destination register. If Rd is omitted, the destination register is Rn.
Rn
is the register holding the value to be divided.
Rm
is a register holding the divisor.
3.6.3.2 Operation
SDIV
performs a signed integer division of the value in Rn by the value in Rm.
UDIV
performs an unsigned integer division of the value in Rn by the value in Rm.
For both instructions, if the value in Rn is not divisible by the value in Rm, the result is rounded towards
zero.
3.6.3.3 Restrictions
Do not use SP and do not use PC.
3.6.3.4 Condition flags
These instructions do not change the flags.
3.6.3.5 Examples
SDIV
R0, R2, R4
; Signed divide, R0 = R2/R4
UDIV
R8, R8, R1
; Unsigned divide, R8 = R8/R1
3.7 Saturating instructions
This section describes the saturating instructions, SSAT and USAT.
3.7.1 SSAT and USAT
Signed Saturate and Unsigned Saturate to any bit position, with optional shift before saturating.
3.7.1.1 Syntax
op{cond} Rd, #n, Rm {, shift #s}
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EFM32G842F128G-E-QFP64 功能描述:128K FLASH, 16K RAM, 4X22 LCD, A 制造商:silicon labs 系列:Gecko 包裝:托盤 零件狀態(tài):在售 核心處理器:ARM? Cortex?-M3 核心尺寸:32-位 速度:32MHz 連接性:I2C,IrDA,智能卡,SPI,UART/USART 外設(shè):欠壓檢測/復(fù)位,DMA,LCD,POR,PWM,WDT I/O 數(shù):53 程序存儲容量:128KB(128K x 8) 程序存儲器類型:閃存 EEPROM 容量:- RAM 容量:16K x 8 電壓 - 電源(Vcc/Vdd):1.98 V ~ 3.8 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x12b,D/A 2x12b 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C(TA) 封裝/外殼:64-TQFP 供應(yīng)商器件封裝:64-TQFP(10x10) 標(biāo)準(zhǔn)包裝:160
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