M30625FGPGP#U7C Renesas Electronics America, M30625FGPGP#U7C Datasheet - Page 121
![IC M16C MCU FLASH 256K 128LQFP](/photos/12/29/122954/m30625fgpgp_u7c_sml.jpg)
M30625FGPGP#U7C
Manufacturer Part Number
M30625FGPGP#U7C
Description
IC M16C MCU FLASH 256K 128LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/60r
Datasheets
1.QSK-62P_PLUS.pdf
(103 pages)
2.M30622SAFPU5.pdf
(308 pages)
3.M30620SPGPU3C.pdf
(423 pages)
Specifications of M30625FGPGP#U7C
Core Processor
M16C/60
Core Size
16-Bit
Speed
24MHz
Connectivity
I²C, IEBus, UART/USART
Peripherals
DMA, WDT
Number Of I /o
111
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
20K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 26x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
128-LQFP
For Use With
867-1000 - KIT QUICK START RENESAS 62PR0K33062PS001BE - R0K33062P STARTER KITR0K33062PS000BE - KIT EVAL STARTER FOR M16C/62PM3062PT3-CPE-3 - EMULATOR COMPACT M16C/62P/30P
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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M16C/62P Group (M16C/62P, M16C/62PT)
Rev.2.41
REJ09B0185-0241
Figure 10.12
10.6.3
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•
•
•
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Jan 10, 2006
The oscillation stop and re-oscillation detect interrupt shares the vector with the watchdog timer interrupt
and low voltage detection interrupt. If the oscillation stop, re-oscillation detection and watchdog timer
interrupts both are used, read the CM22 bit in an interrupt routine to determine which interrupt source is
requesting the interrupt.
Where the main clock re-oscillated after oscillation stop, the clock source for the CPU clock and peripheral
functions must be switched to the main clock in the program. Figure 10.12 shows the Procedure to Switch
Clock Source From On-chip Oscillator to Main Clock.
Simultaneously with oscillation stop, re-oscillation detection interrupt occurrence, the CM22 bit becomes
“1”. When the CM22 bit is set at “1,” oscillation stop, re-oscillation detection interrupt are disabled. By
setting the CM22 bit to “0” in the program, oscillation stop, re-oscillation detection interrupt are enabled.
If the main clock stops during low speed mode where the CM20 bit is “1”, an oscillation stop, re-oscillation
detection interrupt request is generated. At the same time, the on-chip oscillator starts oscillating. In this
case, although the CPU clock is derived from the sub clock as it was before the interrupt occurred, the
peripheral function clocks now are derived from the on-chip oscillator clock.
To enter wait mode while using the oscillation stop, re-oscillation detection function, set the CM02 bit to
“0” (peripheral function clocks not turned off during wait mode).
Since the oscillation stop, re-oscillation detection function is provided in preparation for main clock stop
due to external factors, set the CM20 bit to “0” (Oscillation stop, re-oscillation detection function disabled)
where the main clock is stopped or oscillated in the program, that is where the stop mode is selected or the
CM05 bit is altered.
This function cannot be used if the main clock frequency is 2 MHz or less. In that case, set the CM20 bit to
“0”.
How to Use Oscillation Stop and Re-oscillation Detect Function
Procedure to Switch Clock Source From On-chip Oscillator to Main Clock
NOTES:
NO
1. If the clock source for CPU clock is to be changed to PLL clock, set to PLL operation mode
after set to high-speed mode.
Page 104 of 390
(main clock as CPU clock source)
Determine several times whether
(main clock does not stop)
the CM23 bit is set to “0”
Set the CM06 bit to “1”
Set the CM22 bit to “0”
Set the CM21 bit to “0”
Switch the main clock
(main clock oscillates)
(divide-by-8)
End
YES
(1)
CM06 bit : Bit in CM0 register
CM21 to CM23 bits : Bits in CM2 register
10. Clock Generation Circuit
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