M30626FJPFP#D5C Renesas Electronics America, M30626FJPFP#D5C Datasheet - Page 81

• Manufacturer Part Number: M30626FJPFP#D5C
• Description: MCU 3/5V 512K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/60r

Specifications of M30626FJPFP#D5C

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 24MHz
• Connectivity: I²C, IEBus, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 85
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 31K 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: -20°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

M16C/62P Group (M16C/62P, M16C/62PT)
Rev.2.41
REJ09B0185-0241
Figure 8.4
8.2.6
Shown above is the case where CSEi1W to CSEi0W (i = 0 to 3) bits in the CSE register are “ 00b” (one wait state).
This signal is provided for accessing external devices which need to be accessed at low speed. If input on the
RDY pin is asserted low at the last falling edge of BCLK of the bus cycle, one wait state is inserted in the bus
cycle. While in a wait state, the following signals retain the state in which they were when the RDY signal was
acknowledged.
A0 to A19, D0 to D15, CS0 to CS3, RD, WRL, WRH, WR, BHE, ALE, HLDA
Then, when the input on the RDY pin is detected high at the falling edge of BCLK, the remaining bus cycle is
executed. Figure 8.4 shows Example in which the Wait State was Inserted into Read Cycle by RDY Signal. To
use the RDY signal, set the corresponding bit (CS3W to CS0W bits) in the CSR register to “0” (with wait state).
When not using the RDY signal, the RDY pin must be pulled-up.
In an instance of separate bus
In an instance of multiplexed bus
BCLK
RD
RDY
BCLK
RD
RDY
CSi
(i=0 to 3)
CSi
(i=0 to 3)
Jan 10, 2006
RDY Signal
: Wait using RDY signal
: Wait using software
Example in which Wait State was Inserted into Read Cycle by RDY Signal
Page 64 of 390
Accept timing of RDY signal
tsu(RDY - BCLK)
Accept timing of RDY signal
tsu(RDY - BCLK)
8. Bus