HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 445
HD6477021X20V
Manufacturer Part Number
HD6477021X20V
Description
MCU 5V 32K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7020r
Datasheet
1.HD6417020SVX12IV.pdf
(511 pages)
Specifications of HD6477021X20V
Core Processor
SH-1
Core Size
32-Bit
Speed
20MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
OTP
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6477021X20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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17.1
The SH7020 and SH7021 has 1-kbytes of on-chip RAM. The on-chip RAM is linked to the CPU
and direct memory access controller (DMAC) with a 32-bit data bus (figure 17.1). The CPU can
access data in the on-chip RAM in byte, word, or long word units. The DMAC can access byte or
word data. On-chip RAM data can always be accessed in one state, making the RAM ideal for use
as a program area, stack area, or data area, which require high-speed access. The contents of the
on-chip RAM are held in both the sleep and standby modes. Memory area 7 addresses H'FFFFC00
to H'FFFFFFF are allocated to the on-chip RAM.
17.2
Accesses to addresses H'FFFFC00–H'FFFFFFF are directed to the on-chip RAM. Memory area 7
(H'F000000–H'FFFFFFF) is divided into shadows in 1 kbyte units. All shadow accesses are on-
chip RAM accesses. For more information on shadows, see section 8, Bus State Controller.
Overview
Operation
H'FFFFFFC
H'FFFFC00
H'FFFFC04
Figure 17.1 Block Diagram of RAM
Section 17 RAM
H'FFFFFFD
H'FFFFC01
H'FFFFC05
Internal data bus (32 bits)
On-chip RAM
H'FFFFC02
H'FFFFC06
H'FFFFFFE
H'FFFFC03
H'FFFFC07
H'FFFFFF
RENESAS 431
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