HD64F2676VFC33 Renesas Electronics America, HD64F2676VFC33 Datasheet - Page 201
HD64F2676VFC33
Manufacturer Part Number
HD64F2676VFC33
Description
IC H8S MCU FLASH 256K 144-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2676VFC33
Core Processor
H8S/2600
Core Size
16-Bit
Speed
33MHz
Connectivity
IrDA, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
103
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 12x10b; D/A 4x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
144-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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6.3.10
REFCR specifies DRAM/synchronous DRAM interface refresh control.
Note: The synchronous DRAM interface is not supported in the H8S/2678 Group.
Note:
Bit
15
14
13
12
* Only 0 can be written, to clear the flag.
Bit Name
CMF
CMIE
RCW1
RCW0
Refresh Control Register (REFCR)
Initial Value
0
0
0
0
R/W
R/(W) *
R/W
R/W
R/W
Description
Compare Match Flag
Status flag that indicates a match between the
values of RTCNT and RTCOR.
[Clearing conditions]
[Setting condition]
When RTCOR = RTCNT
Compare Match Interrupt Enable
Enables or disables interrupt requests (CMI) by
the CMF flag when the CMF flag is set to 1.
This bit is valid when refresh control is not
performed. When the refresh control is
performed, this bit is always cleared to 0 and
cannot be modified.
0: Interrupt request by CMF flag disabled
1: Interrupt request by CMF flag enabled
CAS-RAS Wait Control
These bits select the number of wait cycles to
be inserted between the CAS assert cycle and
RAS assert cycle in a DRAM/synchronous
DRAM refresh cycle.
00: Wait state not inserted
01: 1 wait state inserted
10: 2 wait states inserted
11: 3 wait states inserted
When 0 is written to CMF after reading CMF
= 1 while the RFSHE bit is cleared to 0
When CBR refreshing is executed while the
RFSHE bit is set to 1
Rev. 3.00 Mar 17, 2006 page 149 of 926
Section 6 Bus Controller (BSC)
REJ09B0283-0300
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