DF2357F20 Renesas Electronics America, DF2357F20 Datasheet - Page 903

• 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: -

BCRL—Bus Control Register L
Bit
Initial value
Read/Write
Bus Release Enable
0
1
External bus release is disabled
External bus release is enabled
:
:
:
BREQO Pin Enable
BRLE
0
1
R/W
7
0
BREQO output disabled
BREQO output enabled
External Addresses H'010000 to H'01FFFF *
Notes: 1. External addresses H'010000 to H'01FFFF for the H8S/2357
0
1
BREQOE
R/W
6
0
On-chip ROM
External addresses (in external expansion mode)
or reserved area *
2. Do not access a reserved area.
LCAS Select
Write 0 to this bit when using the DRAM interface
External addresses H'010000 to H'03FFFF for the H8S/2398
EAE
R/W
5
1
DACK Timing Select
LCASS
0
1
R/W
H'FED5
4
1
2
(in single-chip mode)
When DMAC single address transfer is performed in
DRAM/PSRAM space, full access is always executed
DACK signal goes low from T
Burst access is possible when DMAC single address
transfer is performed in DRAM/PSRAM space
DACK signal goes low from T
Reserved
Only 1 should be written to this bit
DDS
R/W
3
1
Write Data Buffer Enable
0
1
R/W
—
2
1
1
Write data buffer function not used
Write data buffer function used
Enable
WAIT Pin Enable
0
1
WDBE
R/W
Wait input by WAIT pin disabled
Wait input by WAIT pin enabled
1
0
r
c1
or T
or T
Bus Controller
Rev.6.00 Oct.28.2004 page 873 of 1016
WAITE
R/W
1
0
0
2
cycle
cycle
REJ09B0138-0600H