参数资料
型号: ATAM893T-TKQ
厂商: Atmel
文件页数: 31/98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)
37
4680C–4BMCU–01/05
ATAM893-D
The Timer 2 has a 4-bit compare register (T2CO1) and an 8-bit compare register (T2CO2). Both
these compare registers are cascadable as a 12-bit compare register, or 8-bit compare register
and 4-bit compare register.
For 12-bit compare data value:
m = x +1
0
≤x ≤4095
For 8-bit compare data value:
n = y + 1
0
≤y ≤255
For 4-bit compare data value:
l = z +1
0
≤z ≤15
Figure 5-10. Timer 2
5.3.2.1
Timer 2 Modes
Mode 1: 12-bit Compare Counter
The 4-bit stage and the 8-bit stage work together as a 12-bit compare counter. A compare match
signal of the 4-bit and the 8-bit stage generates the signal for the counter reset, toggle flip-flop or
interrupt. The compare action is programmable via the compare mode register (T2CM). The 4-
bit counter overflow (OVF1) supplies the clock output (POUT) with clocks. The duty cycle gener-
ator (DCG) has to be bypassed in this mode.
Figure 5-11. 12-bit Compare Counter
4-bit Counter 2/1
RES
OVF1
Compare 2/1
T2CO1
CM1
POUT
SSI POUT
CL2/2
DCG
T2M1
P4CR
8-bit Counter 2/2
RES
OVF2
Compare 2/2
T2CO2
T2CM
Control
TOG2
INT4
Bi-phase
Manchester
modulator
OUTPUT
MOUT
M2
to
Modulator 3
T2O
Timer 2
modulator
output-stage
T2M2
SO
Control
SSI
I/O-bus
T2C
CL2/1
T2I
SYSCL
T1OUT
TOG3
SCL
I/O-bus
DCGO
4-bit counter
4-bit compare
RES
4-bit register
CM1
POUT (CL2/1 /16)
8-bit counter
8-bit compare
8-bit register
OVF2
CM2
RES
T2RM
T2OTM
Timer 2
output mode
and T2OTM-bit
T2IM
T2CTM
TOG2
INT4
CL2/1
DCG
T2D1, 0
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