参数资料
型号: UPD78F9212GR-JJG-A
厂商: Renesas Electronics America
文件页数: 54/175页
文件大小: 0K
描述: MCU 8BIT 4KB FLASH MEM 16-SSOP
标准包装: 1
系列: 78K0S/Kx1+
核心处理器: 78K0S
芯体尺寸: 8-位
速度: 10MHz
外围设备: LVD,POR,PWM,WDT
输入/输出数: 13
程序存储器容量: 4KB(4K x 8)
程序存储器类型: 闪存
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 16-SSOP(0.173",4.40mm 宽)
包装: 托盘
其它名称: 972-1046
UPD78F9212GR-JJG-A-ND
CHAPTER 7 8-BIT TIMER H1
User’s Manual U16994EJ6V0UD
145
Figure 7-10. Operation Timing in PWM Output Mode (4/4)
(e) Operation by changing CMP11 (CMP11 = 02H
→ 03H, CMP01 = A5H)
CMP01
TMHE1
INTTMH1
TOH1
(TOLEV1 = 0)
00H 01H 02H
A5H 00H 01H 02H 03H
A5H 00H
CMP11
02H
A5H
03H
02H (03H)
80H
Count clock
8-bit timer counter H1
<2>'
<2>
<1>
<3>
<4>
<5>
<6>
<1>
The count operation is enabled by setting TMHE1 = 1. Start 8-bit timer counter H1 by masking one count
clock to count up. At this time, the TOH1 output remains inactive (when TOLEV1 = 0).
<2>
The CMP11 register value can be changed during timer counter operation. This operation is asynchronous
to the count clock.
<3>
When the values of 8-bit timer counter H1 and the CMP01 register match, the value of 8-bit timer counter H1
is cleared, the TOH1 output becomes active, and the INTTMH1 signal is output.
<4>
If the CMP11 register value is changed, the value is latched and not transferred to the register. When the
values of 8-bit timer counter H1 and the CMP11 register before the change match, the value is transferred to
the CMP11 register and the CMP11 register value is changed (<2>’).
However, three count clocks or more are required from when the CMP11 register value is changed to when
the value is transferred to the register. If a match signal is generated within three count clocks, the changed
value cannot be transferred to the register.
<5>
When the values of 8-bit timer counter H1 and the CMP11 register after the change match, the TOH1 output
becomes inactive. 8-bit timer counter H1 is not cleared and the INTTMH1 signal is not generated.
<6>
Clearing the TMHE1 bit to 0 during timer H1 operation makes the INTTMH1 signal and TOH1 output inactive.
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