Page 29
TMP89FM42
RA001
Even if the
STOP
pin input returns to low after the warm-up starts, the STOP mode is not restarted.
Figure 2-8 Level-sensitive Release Mode (Example when the high-frequency clock oscillation
circuit is selected)
Note: When the STOP mode is released, the warm-up counter source clock automatically changes to the clock that generated the
main system clock when the STOP mode was started, regardless of WUCCR<WUCSEL>.
Note: If the rising edge is input to the
STOP
pin within 1 machine cycle after SYSCR1<STOP> is set to "1", the STOP mode will not
be released.
Figure 2-9 Edge-sensitive Release Mode (Example when the high-frequency clock oscillation
circuit is selected)
- Edge-sensitive release mode
In this mode, the STOP mode is released at the rising edge of the
STOP
pin input.
Setting SYSCR1<RELM> to "0" selects the edge-sensitive release mode.
This is used in applications where a relatively short program is executed repeatedly at
periodic intervals. This periodic signal (for example, a clock from a low-power con-
sumption oscillator) is input to the
STOP
pin. In the edge-sensitive release mode, the
STOP mode is started even when the
STOP
pin input is high
Example: Starting the STOP mode from the NORMAL mode
(Warm-up time at release of the STOP mode is about 200ms at fc=10 MHz.)
LD
(WUCCR),0x01
; WUCCR<WUCDIV> = 00 (No division) (Note)
LD
(WUCDR),0x20
;
;
Sets the warm-up time
200ms / 6.4
µ
s = 31.25
→
round up to 0x20
DI
; IMF = 0
LD
(SYSCR1) , 0x80
; Starts the STOP mode with the edge-sensitive release mode selected
STOP pin
XOUT pin
NORMAL mode
VIH
Warm-up
STOP
mode
STOP
mode
The STOP mode
is started
by the program.
The STOP mode is released by the hardware
at the rising edge of the STOP pin input.
NORMAL
mode
Summary of Contents for TLCS-870/C1 Series
Page 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Page 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Page 4: ......
Page 14: ......
Page 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Page 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Page 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Page 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Page 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Page 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Page 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Page 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Page 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Page 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Page 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Page 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Page 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Page 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Page 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Page 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Page 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Page 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Page 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Page 406: ...26 Package Dimensions TMP89FM42 ...
Page 408: ......