參數(shù)資料
型號: UPD78F9212CS-CAB-A
廠商: Renesas Electronics America
文件頁數(shù): 44/175頁
文件大?。?/td> 0K
描述: MCU 8BIT 4KB FLASH 16PIN
標準包裝: 400
系列: 78K0S/Kx1+
核心處理器: 78K0S
芯體尺寸: 8-位
速度: 10MHz
外圍設備: LVD,POR,PWM,WDT
輸入/輸出數(shù): 13
程序存儲器容量: 4KB(4K x 8)
程序存儲器類型: 閃存
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 16-DIP(0.300",7.62mm)
包裝: 托盤
CHAPTER 7 8-BIT TIMER H1
User’s Manual U16994EJ6V0UD
136
(2) Port mode register 2 (PM2) and port mode control register 2 (PMC2)
Note
When using the P20/TOH1/TI000/ANI0 pin for timer output, clear PM20, the output latch of P20, and PMC20 to 0.
PM2 and PMC2 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets PM2 to FFH, and clears PMC2 to 00H.
Note
μPD78F921x only
Figure 7-5. Format of Port Mode Register 2 (PM2)
Address: FF22H
After reset: FFH
R/W
Symbol
7
6
5
4
3
2
1
0
PM2
1
PM23
PM22
PM21
PM20
PM2n
P2n pin I/O mode selection (n = 0 to 3)
0
Output mode (output buffer on)
1
Input mode (output buffer off)
Figure 7-6. Format of Port Mode Control Register 2 (PMC2) (
μPD78F921x only)
Address: FF84H
After reset: 00H
R/W
Symbol
7
6
5
4
3
2
1
0
PMC2
0
PMC23
PMC22
PMC21
PMC20
PMC2n
Specification of operation mode (n = 0 to 3)
0
Port/Alternate-function (except A/D converter) mode
1
A/D converter mode
7.4
Operation of 8-bit Timer H1
7.4.1
Operation as interval timer/square-wave output
When 8-bit timer counter H1 and compare register 01 (CMP01) match, an interrupt request signal (INTTMH1) is
generated and 8-bit timer counter H1 is cleared to 00H.
Compare register 11 (CMP11) is not used in interval timer mode. Since a match of 8-bit timer counter H1 and the
CMP11 register is not detected even if the CMP11 register is set, timer output is not affected.
By setting bit 0 (TOEN1) of timer H mode register 1 (TMHMD1) to 1, a square wave of any frequency (duty = 50%)
is output from TOH1.
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