DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 146

• Manufacturer Part Number: DF2398TE20
• Description: IC H8S MCU FLASH 256K 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2398TE20; HD64F2398TE20

Bit 0—WAIT Pin Enable (WAITE): Selects enabling or disabling of wait input by the WAIT pin.
6.2.6
MCR is an 8-bit readable/writable register that selects the DRAM strobe control method, number of precharge cycles,
access mode, address multiplexing shift size, and the number of wait states inserted during refreshing, when areas 2 to 5
are designated as DRAM interface.
MCR is initialized to H'00 by a power-on reset and in hardware standby mode. It is not initialized by a manual reset* or in
software standby mode.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Bit 7—TP Cycle Control (TPC): Selects whether a 1-state or 2-state precharge cycle (T
designated as DRAM space are accessed.
Bit 6—Burst Access Enable (BE): Selects enabling or disabling of burst access to areas 2 to 5 designated as DRAM
space. DRAM space burst access is performed in fast page mode.
Bit 5—RAS Down Mode (RCDM): When areas 2 to 5 are designated as DRAM space and access to DRAM is
interrupted, RCDM selects whether the next DRAM access is waited for with the RAS signal held low (RAS down mode),
or the RAS signal is driven high again (RAS up mode).
Rev.6.00 Oct.28.2004 page 116 of 1016
REJ09B0138-0600H
Bit
Initial value :
R/W
Memory Control Register (MCR)
Bit 0
WAITE
0
1
Bit 7
TPC
0
1
Bit 6
BE
0
1
Bit 5
RCDM
0
1
:
:
TPC
R/W
7
0
Description
Wait input by WAIT pin disabled. WAIT pin can be used as I/O port.
Wait input by WAIT pin enabled
Description
1-state precharge cycle is inserted
2-state precharge cycle is inserted
Description
Burst disabled (always full access)
For DRAM space access, access in fast page mode
Description
DRAM interface: RAS up mode selected
DRAM interface: RAS down mode selected
R/W
BE
6
0
RCDM
R/W
5
0
CW2
R/W
4
0
MXC1
R/W
3
0
MXC0
R/W
2
0
RLW1
R/W
1
0
P
) is to be used when areas 2 to 5
RLW0
R/W
0
0
(Initial value)
(Initial value)
(Initial value)
(Initial value)