參數資料
型號: MC9S12DP512
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: Microcontroller Unit (MCU)
中文描述: 微控制器(MCU)
文件頁數: 69/124頁
文件大?。?/td> 2125K
代理商: MC9S12DP512
69
Section 4 Modes of Operation
4.1 Overview
Eight possible modes determine the operating configuration of the MC9S12DP512. Each mode has an
associated default memory map and external bus configuration controlled by a further pin.
Three low power modes exist for the device (
Section 4.4 Low Power Modes
).
4.2 Chip Configuration Summary
TheoperatingmodeoutofresetisdeterminedbythestatesoftheMODC,MODB,andMODApinsduring
reset(
Table 4-1
).TheMODC,MODB,andMODAbitsintheMODEregistershowthecurrentoperating
modeandprovidelimitedmodeswitchingduringoperation.ThestatesoftheMODC,MODB,andMODA
pinsarelatchedintothesebitsontherisingedgeoftheresetsignal.TheROMCTLsignalallowsthesetting
of the ROMON bit in the MISC register thus controlling whether the internal Flash is visible in the
memory map. ROMON = 1 means the Flash is visible in the memory map. The state of the ROMCTL pin
is latched into the ROMON bit in the MISC register on the rising edge of the reset signal.
For further explanation on the modes refer to the HCS12 Multiplexed External Bus Interface (MEBI)
Block Guide.
Table 4-1 Mode Selection
BKGD =
MODC
PE6 =
MODB
PE5 =
MODA
PK7 =
ROMCTL
ROMON
Bit
Mode Description
0
0
0
X
1
Special Single Chip, BDM allowed and ACTIVE. BDM is
allowed in all other modes but a serial command is
required to make BDM active.
0
0
1
0
1
X
0
1
X
0
1
1
0
0
1
0
1
0
1
Emulation Expanded Narrow, BDM allowed
0
1
0
Special Test (Expanded Wide), BDM allowed
0
1
1
Emulation Expanded Wide, BDM allowed
1
0
0
Normal Single Chip, BDM allowed
1
0
1
Normal Expanded Narrow, BDM allowed
1
1
0
X
1
Peripheral; BDM allowed but bus operations would cause
bus conflicts (must not be used)
1
1
1
0
1
0
1
Normal Expanded Wide, BDM allowed
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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MC9S12DP512CPVER 功能描述:16位微控制器 - MCU 512K FLASH HCS12 MCU RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
MC9S12DP512CPVER 制造商:Freescale Semiconductor 功能描述:Microcontroller
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