HD6473228F10V Renesas Electronics America, HD6473228F10V Datasheet - Page 203
HD6473228F10V
Manufacturer Part Number
HD6473228F10V
Description
MCU 5V 32K,PB-FREE 64-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/325r
Datasheet
1.HD6413238F10.pdf
(301 pages)
Specifications of HD6473228F10V
Core Processor
H8/300
Core Size
8-Bit
Speed
10MHz
Connectivity
SCI, UART/USART
Number Of I /o
53
Program Memory Size
8KB (8K x 8)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Peripherals
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6473228F10V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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10.1 Overview
The H8/3257 and H8/3256 have 2 Kbytes of on-chip static RAM, H8/325 and H8/324 have
1 Kbyte, the H8/323 has 512 bytes, and the H8/322 has 256 bytes. The on-chip RAM is connected
to the CPU by a 16-bit data bus. Both byte and word access to the on-chip RAM are performed in
two states, enabling rapid data transfer and instruction execution.
The on-chip RAM occupies the following addresses in the chip’s address space.
H8/3257, H8/3256: H'F780 to H'FF7F
H8/325, H8/324: H'FB80 to H'FF7F
H8/323: H'FD80 to H'FF7F
H8/322: H'FE80 to H'FF7F
The RAME bit in the system control register (SYSCR) can enable or disable the on-chip RAM,
permitting these addresses to be allocated to external memory instead, if so desired.
10.2 Block Diagram
Figure 10-1 is a block diagram of the on-chip RAM.
Figure 10-1. Block Diagram of On-Chip RAM (H8/3257)
Address
H'F780
H'F782
H'FF7E
Section 10. RAM
Even address
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
H'F780
H'F782
H'FF7E
On-chip RAM
197
Odd address
H'F781
H'F783
H'FF7F
Fig 10-1
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