HD6417750RF240DV Renesas Electronics America, HD6417750RF240DV Datasheet - Page 502

• Manufacturer Part Number: HD6417750RF240DV
• Description: MPU 3V 16K I-TEMP,PB-FREE 208-QF
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417750RF240DV

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 28
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 13 Bus State Controller (BSC)
Bit 7—Compare-Match Flag (CMF): Status flag that indicates a match between the refresh
timer counter (RTCNT) and refresh time constant register (RTCOR) values.
Bit 7: CMF
0
1
Note:
Bit 6—Compare-Match Interrupt Enable (CMIE): Controls generation or suppression of an
interrupt request when the CMF flag is set to 1 in RTCSR. Do not set this bit to 1 when CAS-
before-RAS refreshing or auto-refreshing is used.
Bit 6: CMIE
0
1
Bits 5 to 3—Clock Select Bits (CKS2–CKS0): These bits select the input clock for RTCNT. The
base clock is the external bus clock (CKIO). The RTCNT count clock is obtained by scaling CKIO
by the specified factor.
Bit 5: CKS2
0
1
Rev.7.00 Oct. 10, 2008 Page 416 of 1074
REJ09B0366-0700
*
If 1 is written, the original value is retained.
0
1
0
1
Bit 4: CKS1
Description
RTCNT and RTCOR values do not match
[Clearing condition]
When 0 is written to CMF
RTCNT and RTCOR values match
[Setting condition]
When RTCNT = RTCOR*
Description
Interrupt requests initiated by CMF are disabled
Interrupt requests initiated by CMF are enabled
Bit 3: CKS0
0
1
0
1
0
1
0
1
Description
Clock input disabled
Bus clock (CKIO)/4
CKIO/16
CKIO/64
CKIO/256
CKIO/1024
CKIO/2048
CKIO/4096
(Initial value)
(Initial value)
(Initial value)