参数资料
型号: MC705L16CFUE
厂商: Freescale Semiconductor
文件页数: 132/146页
文件大小: 0K
描述: IC MCU 8BIT EPROM 80-QFP
标准包装: 84
系列: HC05
核心处理器: HC05
芯体尺寸: 8-位
速度: 2.1MHz
连通性: SPI
外围设备: LCD,POR,WDT
输入/输出数: 16
程序存储器容量: 16KB(16K x 8)
程序存储器类型: OTP
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 80-QFP
包装: 托盘
Timer System
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
86
Freescale Semiconductor
IM2 — Timer Input 2 Mode Select
The IM2 bit selects whether EVI input is gated or not gated by CLK2. This bit is cleared on reset.
0 = EVI not gated by CLK2 (event mode)
1 = EVI gated by CLK2 (gate mode)
IL2 — Timer Input 2 Active Edge (Level) Select
The IL2 bit selects the active edge of EVI to increment the counter for event mode (IM2 = 0) or gate
enable level of EVI for gate mode
(IM2 = 1). This bit is cleared on reset.
0 = Falling edge selected (event mode)
Low level enables counting (gate mode)
1 = Rising edge selected (event mode)
High level enables counting (gate mode)
OE2 — Timer Output 2 (EVO) Output Enable
The OE2 bit enables EVO output on the PC5 pin. When this bit is changed, control of the pin is delayed
(synchronized) until the next active edge of EVO is selected by the OL2 bit. This bit is cleared on reset.
0 = EVO output disabled
1 = EVO output enabled
OL2 — Timer Output 2 Edge Select for Synchronization
The OL2 bit selects which edge of EVO clock should be synchronized by the OE2 bit control. The OL2
bit also decides the initial value of the CMP2 divider, when counter 2 is written to by the CPU. This bit
is cleared on reset.
0 = The falling edge of EVO switches EVO output and PC5 if the OE2 bit has been changed.
1 = The rising edge of EVO switches EVO output and PC5 if the OE2 bit has been changed.
Table 9-1. EVI Modes Selection
IM2
IL2
Action on Clock
0
Falling edge of EVI increments counter
0
1
Rising edge of EVI increments counter
1
0
Low level on EVI enables counting
1
High level on EVI enables counting
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