141
CHAPTER 8 LOW-POWER CONTROL CIRCUIT
8.2
Block Diagram of the Low-Power Consumption Control
Circuit
The low-power consumption control circuit consists of the following seven blocks:
• CPU intermittent operation selector
• Standby control circuit
• CPU clock control circuit
• Peripheral clock control circuit
• Pin high-impedance control circuit
• Internal reset generation circuit
• Low-power consumption mode control register (LPMCR)
■
Block Diagram of the Low-power Consumption Control Circuit
Figure 8.2-1 shows a block diagram of the low-power consumption control circuit.
Figure 8.2-1 Block Diagram of the Low-power Consumption Control Circuit
Pin
Pin
X0
X1
Divide-
by-2
System clock
generation circuit
Divide-
by-1024
Divide-
by-2
Divide-
by-4
Divide-
by-4
Divide-
by-4
Divide-
by-2
Time-base Timer
Watchdog Timer
HCLK
Mainclock
STP SLP SPL RST TMD CG1 CG0
Lo
w
-Po
w
er Consumption Mode Control Register (LPMCR)
PLL multiplier circuit
Oscillation
w
ait time
Clock
-
MCM WS1 WS0
-
MCS CS1 CS0
Clock Selection register (CKSCR)
2
Selector
2
interval selector
stabilization
Pin high-
impedance
control circuit
Internal reset
generation
circuit
CPU clock
control
circuit
Peripheral
clock control
circuit
Standby
control
circuit
CPU intermittent
operation
selector
Pin
RST
Interrupt
clearing
Oscillation stabilization
w
ait time clear
Machine clock
Stop signal
Stop and
sleep signals
intermittent
cycle
selector
Internal
reset
CPU
clock
Pin Hi-Z
control
Re-
served
CS2
Bit8 of PLL and
Special Configulation
Control Register
(PSCCR)
Peripheral
clock
Summary of Contents for MB90390 Series
Page 2: ......
Page 4: ......
Page 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
Page 18: ...xiv ...
Page 132: ...104 CHAPTER 5 CLOCKS ...
Page 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Page 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Page 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Page 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Page 274: ...246 CHAPTER 15 WATCH TIMER ...
Page 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Page 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Page 364: ...336 CHAPTER 19 UART0 UART1 ...
Page 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Page 432: ...404 CHAPTER 20 UART2 UART3 ...
Page 482: ...454 CHAPTER 22 SERIAL I O ...
Page 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Page 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Page 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Page 722: ...694 APPENDIX ...
Page 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
Page 740: ......