參數(shù)資料
型號: MC68HC16Y1
廠商: Motorola, Inc.
英文描述: 16-Bit Modular Microcontroller(16位模塊化微控制器)
中文描述: 16位微控制器模塊(16位模塊化微控制器)
文件頁數(shù): 41/122頁
文件大?。?/td> 749K
代理商: MC68HC16Y1
MC68HC16Y1
MC68HC16Y1TS/D
MOTOROLA
41
External ROM emulation is enabled by holding DATA10 and DATA13 low during reset (DATA14 must
be held high during reset to enable the ROM module). While ROM emulation mode is enabled, memory
chip select signal CSM is asserted whenever a valid access to an address assigned to the masked ROM
array is made. The ROM module does not acknowledge IMB accesses while in emulation mode — this
causes the SCIM to run an external bus cycle for each access. See
3.9 Chip Selects
and
9 Masked
ROM Module
for more information.
3.3.1 System Protection
System protection includes a bus monitor, a halt monitor, a spurious interrupt monitor, and a software
watchdog timer. These functions reduce the number of external components required for a complete
control system.
The system protection control register controls system monitor functions, software watchdog clock
prescaling, and bus monitor timing. In operating modes, this register can be written only once following
power-on or reset, but can be read at any time. In test mode, it is writable at any time.
SWE — Software Watchdog Enable
0 = Software watchdog disabled
1 = Software watchdog enabled
SWP — Software Watchdog Prescale
This bit controls the value of the software watchdog prescaler.
0 = Software watchdog clock not prescaled
1 = Software watchdog clock prescaled by 512
The reset value of SWP is the complement of the state of the MODCLK pin during reset.
SWT[1:0] — Software Watchdog Timing
This field selects the divide ratio used to establish software watchdog time-out period. The following ta-
ble gives the ratio for each combination of SWP and SWT bits.
DBE — Double Bus Fault Enable
0 = Disable double bus fault halt monitor function
1 = Enable double bus fault halt monitor function
BME — Bus Monitor External Enable
SYPCR
— System Protection Control Register
$YFFA21
7
6
5
4
3
2
1
0
SWE
RESET:
1
SWP
SWT
DBE
BME
BMT
MODCLK
0
0
0
0
0
0
SWP
0
SWT
00
Ratio
2
9
2
11
2
13
2
15
2
18
2
20
2
22
2
24
0
01
0
10
0
11
1
00
1
01
1
10
1
11
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MC68HC16Z1CAG16 制造商:Freescale Semiconductor 功能描述:IC16-BIT MICROCONTROLLER
MC68HC16Z1CAG20 功能描述:16位微控制器 - MCU 16 BIT MCU 1K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) 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
MC68HC16Z1CAG20 制造商:Freescale Semiconductor 功能描述:Microcontroller