M30625FGPGP#U7C Renesas Electronics America, M30625FGPGP#U7C Datasheet - Page 149
![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
14.1
14.1.1
14.1.2
14.1.3
14.1.4
The transfer cycle consists of a memory or SFR read (source read) bus cycle and a write (destination write) bus
cycle. The number of read and write bus cycles is affected by the source and destination addresses of transfer.
During memory extension and microprocessor modes, it is also affected by the BYTE pin level. Furthermore, the
bus cycle itself is extended by a software wait or RDY signal.
Figure 14.6 shows the example of the Transfer Cycles for Source Read. For convenience, the destination write
cycle is shown as one cycle and the source read cycles for the different conditions are shown. In reality, the
destination write cycle is subject to the same conditions as the source read cycle, with the transfer cycle changing
accordingly. When calculating transfer cycles, take into consideration each condition for the source read and the
destination write cycle, respectively. For example, when data is transferred in 16 bit units using an 8-bit bus ((2) on
Figure 14.6), two source read bus cycles and two destination write bus cycles are required.
If the transfer unit and data bus both are 16 bits and the source address of transfer begins with an odd address,
the source read cycle consists of one more bus cycle than when the source address of transfer begins with an
even address.
Similarly, if the transfer unit and data bus both are 16 bits and the destination address of transfer begins with an
odd address, the destination write cycle consists of one more bus cycle than when the destination address of
transfer begins with an even address.
During memory extension and microprocessor modes, if 16 bits of data are to be transferred on an 8-bit data bus
(input on the BYTE pin = high), the operation is accomplished by transferring 8 bits of data twice. Therefore,
this operation requires two bus cycles to read data and two bus cycles to write data. Furthermore, if the DMAC
is to access the internal area (internal ROM, internal RAM, or SFR), unlike in the case of the CPU, the DMAC
does it through the data bus width selected by the BYTE pin.
For memory or SFR accesses in which one or more software wait states are inserted, the number of bus cycles
required for that access increases by an amount equal to software wait states.
During memory extension and microprocessor modes, DMA transfers to and from an external area are affected
by the RDY signal. Refer to 8.2.6 RDY Signal.
Transfer Cycles
Jan 10, 2006
Effect of Source and Destination Addresses
Effect of BYTE Pin Level
Effect of Software Wait
Effect of RDY Signal
Page 132 of 390
14. DMAC
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