参数资料
型号: EFM32TG210F32
厂商: Energy Micro
文件页数: 103/136页
文件大小: 0K
描述: MCU 32BIT 32KB FLASH 32-QFN
特色产品: EFM32 Tiny Gecko
标准包装: 1
系列: Tiny Gecko
核心处理器: ARM? Cortex?-M3
芯体尺寸: 32-位
速度: 32MHz
连通性: EBI/EMI,I²C,IrDA,智能卡,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 24
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 4K x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 3.8 V
数据转换器: A/D 4x12b,D/A 1x12b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 32-VQFN 裸露焊盘
包装: 标准包装
其它名称: 914-1034-6
...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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