参数资料
型号: ATAM893T-TKQ
厂商: Atmel
文件页数: 39/98页
文件大小: 0K
描述: IC MON TIRE-PRESS ATARX9X SER
标准包装: 4,000
系列: MARC4
核心处理器: MARC4
芯体尺寸: 4-位
速度: 4MHz
连通性: SSI(2 线,3 线)
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 16
程序存储器容量: 4KB(4K x 8)
程序存储器类型: EEPROM
EEPROM 大小: 64 x 16
RAM 容量: 256 x 4
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 6.5 V
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: 20-SOIC(0.209",5.30mm 宽)
包装: 带卷 (TR)
44
4680C–4BMCU–01/05
ATAM893-D
5.3.2.7
Duty Cycle Generator
The duty cycle generator generates duty cycles of 25%, 33% or 50%. The frequency at the duty
cycle generator output depends on the duty cycle and the Timer 2 prescaler setting. The DCG-
stage can also be used as an additional programmable prescaler for Timer 2.
Figure 5-23. DCG Output Signals
5.3.2.8
Timer 2 Mode Register 2 (T2M2)
Table 5-10.
Timer 2 Mode Select Bits
Mode
T2MS1
T2MS0
Clock Output (POUT)
Timer 2 Modes
1
4-bit counter overflow (OVF1)
12-bit compare counter, the DCG
have to be bypassed in this mode
2
1
0
4-bit compare output (CM1)
8-bit compare counter with 4-bit
programmable prescaler and duty
cycle generator
3
0
1
4-bit compare output (CM1)
8-bit compare counter clocked by
SYSCL or the external clock input
T2I, 4-bit prescaler run, the
counter 2/1 starts after writing
mode 3
4
0
4-bit compare output (CM1)
8-bit compare counter clocked by
SYSCL or the external clock input
T2I, 4-bit prescaler stop and
resets
DCGIN
DCGO0
DCGO1
DCGO2
DCGO3
Address: '7'hex — Subaddress: '2'hex
Bit 3Bit 2Bit 1Bit 0
T2M2
T2TOP
T2OS2
T2OS1
T2OS0
Reset value: 1111b
T2TOP
Timer 2 Toggle Output Preset
This bit allows the programmer to preset the Timer 2 output T2O.
T2TOP = 0, resets the toggle outputs with the write cycle (M2 = 0)
T2TOP = 1, sets toggle outputs with the write cycle (M2 = 1)
Note: If T2R = 1, no output preset is possible
T2OS2
Timer 2 Output Select bit 2
T2OS1
Timer 2 Output Select bit 1
T2OS0
Timer 2 Output Select bit 0
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