DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 200

MCU 5V 128K I-TEMP,PB-FREE, 100-

DF2148RTE20IV

Manufacturer Part Number
DF2148RTE20IV
Description
MCU 5V 128K I-TEMP,PB-FREE, 100-
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheets

Specifications of DF2148RTE20IV

Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
Host Interface, I²C, IrDA, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
74
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Section 6 Bus Controller
6.2
6.2.1
BCR is an 8-bit readable/writable register that specifies the external memory space access mode,
and the extent of the I/O area when the I/O strobe function has been selected for the AS pin.
BCR is initialized to H'D7 by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Bit 7—Idle Cycle Insert 1 (ICIS1): Reserved. Do not write 0 to this bit.
Bit 6—Idle Cycle Insert 0 (ICIS0): Selects whether or not a one-state idle cycle is to be inserted
between bus cycles when successive external read and external write cycles are performed.
Bit 6
ICIS0
0
1
Bit 5—Burst ROM Enable (BRSTRM): Selects whether external space is designated as a burst
ROM interface space. The selection applies to the entire external space.
Bit 5
BRSTRM
0
1
Rev. 4.00 Sep 27, 2006 page 154 of 1130
REJ09B0327-0400
Bit
Initial value
Read/Write
Register Descriptions
Bus Control Register (BCR)
Description
Idle cycle not inserted in case of successive external read and external write cycles
Idle cycle inserted in case of successive external read and external write cycles
Description
Basic bus interface
Burst ROM interface
ICIS1
R/W
7
1
ICIS0
R/W
6
1
BRSTRM
R/W
5
0
BRSTS1
R/W
4
1
BRSTS0
R/W
3
0
R/W
2
1
IOS1
R/W
1
1
(Initial value)
(Initial value)
IOS0
R/W
0
1

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