HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 625
HD64F2623FA20J
Manufacturer Part Number
HD64F2623FA20J
Description
IC H8S MCU FLASH 256K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2623FA20J
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
53
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
12K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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16.3
ADDRA to ADDRD are 16-bit registers, and the data bus to the bus master is 8 bits wide.
Therefore, in accesses by the bus master, the upper byte is accessed directly, but the lower byte is
accessed via a temporary register (TEMP).
A data read from ADDR is performed as follows. When the upper byte is read, the upper byte
value is transferred to the CPU and the lower byte value is transferred to TEMP. Next, when the
lower byte is read, the TEMP contents are transferred to the CPU.
When reading ADDR. always read the upper byte before the lower byte. It is possible to read only
the upper byte, but if only the lower byte is read, incorrect data may be obtained.
Figure 16.2 shows the data flow for ADDR access.
Bus master
(H'AA)
Bus master
(H'40)
Interface to Bus Master
Lower byte read
Upper byte read
Figure 16.2 ADDR Access Operation (Reading H'AA40)
Bus interface
Bus interface
ADDRnH
ADDRnH
(H'AA)
(H'AA)
Rev. 5.00 Jan 10, 2006 page 599 of 1042
ADDRnL
ADDRnL
(H'40)
(H'40)
TEMP
TEMP
(H'40)
(H'40)
Module data bus
Module data bus
Section 16 A/D Converter
(n = A to D)
(n = A to D)
REJ09B0275-0500
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