HD64F2338VFC25 Renesas Electronics America, HD64F2338VFC25 Datasheet - Page 180
HD64F2338VFC25
Manufacturer Part Number
HD64F2338VFC25
Description
MCU 3V 256K 144-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheet
1.DF2338VFC25V.pdf
(1246 pages)
Specifications of HD64F2338VFC25
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
106
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.7 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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F2338VFC25
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 180 of 1246
- Download datasheet (7Mb)
6.2.8
RTCNT is an 8-bit readable/writable up-counter.
RTCNT counts up using the internal clock selected by bits CKS2 to CKS0 in DRAMCR.
When RTCNT matches RTCOR (compare match), the CMF flag in DRAMCR is set to 1 and
RTCNT is cleared to H'00. If the RFSHE bit in DRAMCR is set to 1 at this time, a refresh cycle is
started. Also, if the CMIE bit in DRAMCR is set to 1, a compare match interrupt (CMI) is
generated.
RTCNT is initialized to H'00 by a reset, and in hardware standby mode. It is not initialized in
software standby mode.
6.2.9
RTCOR is an 8-bit readable/writable register that sets the period for compare match operations
with RTCNT.
The values of RTCOR and RTCNT are constantly compared, and if they match, the CMF flag in
DRAMCR is set to 1 and RTCNT is cleared to H'00.
RTCOR is initialized to H'FF by a reset, and in hardware standby mode. It is not initialized in
software standby mode.
Rev.4.00 Sep. 07, 2007 Page 148 of 1210
REJ09B0245-0400
Bit
Initial value :
R/W
Bit
Initial value :
R/W
Refresh Timer Counter (RTCNT)
Refresh Time Control Register (RTCOR)
:
:
:
:
R/W
R/W
7
0
7
1
R/W
R/W
6
0
6
1
R/W
R/W
5
0
5
1
R/W
R/W
4
0
4
1
R/W
R/W
0
1
3
3
R/W
R/W
2
0
2
1
R/W
R/W
1
0
1
1
R/W
R/W
0
0
0
1
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