DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 577
DF2148BTE20
Manufacturer Part Number
DF2148BTE20
Description
IC H8S MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148BTE20
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, IrDA, SCI, X-Bus
Peripherals
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)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F2148BTE20
HD64F2148BTE20
HD64F2148BTE20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2148BTE20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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18.4.2
Table 18.4 shows host interface operations from the HIF host, and slave (this LSI) operation.
Table 18.4 Host Interface Operations from HIF Host, and Slave Operation
Note: n = 1 to 4
18.4.3
The A20 gate signal can mask address A20 to emulate an addressing mode used by personal
computers with an 8086 * -family CPU. A regular-speed A20 gate signal can be output under
firmware control. Fast A20 gate output is enabled by setting the FGA20E bit (bit 0) to 1 in HICR
(H'FFF0).
Note: * Intel microprocessor.
Regular A20 Gate Operation: Output of the A20 gate signal can be controlled by an H'D1
command followed by data. When the slave processor (this LSI) receives data, it normally uses an
interrupt routine activated by the IBF1 interrupt to read IDR1. If the data follows an H'D1
command, software copies bit 1 of the data and outputs it at the gate A20 pin.
Fast A20 Gate Operation: When the FGA20E bit is set to 1, P81/GA20 is used for output of a
fast A20 gate signal. Bit P81DDR must be set to 1 to assign this pin for output. When the DDR bit
for P81 is set to 1, the state of the P81/GA20 pin cannot be monitored by reading the DR bit for
P81. The state of the P81/GA20 pin can be monitored by reading the GA20 bit in the LPC’s
HICR2 register. The initial output from this pin will be a logic 1, which is the initial value.
Afterward, the host processor can manipulate the output from this pin by sending commands and
data. This function is available only when register IDR1 is accessed using CS1. The slave
processor (this LSI) decodes the commands input from the host processor. When an H'D1 host
Other than
CSn
CSn
CSn
CSn
1
Control States
A20 Gate
CSn
CSn
CSn
CSn
0
IOR
IOR
0
1
IOR
IOR
IOW
IOW
0
1
0
1
IOW
IOW
HA0
0
1
0
1
0
1
0
1
Operation
Setting prohibited
Setting prohibited
Data read from output data register n (ODR_n)
Status read from status register n (STR_n)
Data written to input data register n (IDR_n)
Command written to input data register n (IDR_n)
Idle state
Idle state
Section 18 Host Interface X-Bus Interface (XBS)
Rev. 3.00 Mar 21, 2006 page 521 of 788
REJ09B0300-0300
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