DF2357F20 Renesas Electronics America, DF2357F20 Datasheet - Page 169

• Manufacturer Part Number: DF2357F20
• Description: IC H8S MCU FLASH 5V 128K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2357F20

• 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: 128KB (128K 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: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

6.5.5
Table 6-7 shows the pins used for DRAM interfacing and their functions.
Table 6-7
Pins Used for DRAM Interface
Pin
HWR
LCAS
CS2
CS3
CS4
CS5
CAS
WAIT
A
D
DRAM Interface Pins
12
15
to A
to D
0
0
With DRAM
Setting
WE
LCAS
RAS2
RAS3
RAS4
RAS5
UCAS
WAIT
A
D
12
15
to A
to D
0
0
Name
Write enable
Lower column address strobe Output Lower column address strobe
Row address strobe 2
Row address strobe 3
Row address strobe 4
Row address strobe 5
Upper column address strobe Output Upper column address strobe
Wait
Address pins
Data pins
I/O
Output When 2-CAS system is set,
Output Row address strobe when
Output Row address strobe when
Output Row address strobe when
Output Row address strobe when
Input
Output Row address/column address
I/O
Function
write enable for DRAM space
access.
for 16-bit DRAM space access
area 2 is designated as DRAM
space.
area 3 is designated as DRAM
space.
area 4 is designated as DRAM
space.
area 5 is designated as DRAM
space.
for DRAM space access
Wait request signal
multiplexed output
Data input/output pins
Rev.6.00 Oct.28.2004 page 139 of 1016
REJ09B0138-0600H