HD6477021X20V Renesas Electronics America, HD6477021X20V Datasheet - Page 68

• Manufacturer Part Number: HD6477021X20V
• Description: MCU 5V 32K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7020r

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: -

3.1
The SH7020 and SH7021 operate in one of four operating modes (modes 0, 1, 2, and 7). Modes 0
and 1 differ in the bus width of memory area 0. The mode is selected by the mode pins (MD2–
MD0) as indicated in table 3.1. Do not change the mode selection while the chip is operating.
Table 3.1
Operating Mode
Mode 0*
Mode 1*
Mode 2
Mode 7*
Notes : 1.SH7021 PROM version only
3.2
3.2.1
In mode 0, memory area 0 has an eight-bit bus width. For the memory map, see section 8, Bus
State Controller.
3.2.2
In mode 1, memory area 0 has a 16-bit bus width.
3.2.3
In mode 2, memory area 0 is assigned to the on-chip ROM.
3.2.4
Mode 7 is a PROM mode. In this mode, the EPROM can be programmed.For details,see section
16, ROM. Do not set to mode 7 unless the product is the SH7021(PROM version).
2.Only modes 0 and 1are available in the SH7020 ROMless version.
2
2
Types of Operating Modes and Their Selection
Operating Mode Descriptions
Mode 0 (MCU Mode 0)
Mode 1 (MCU Mode 1)
Mode 2 (MCU Mode 2)
Mode 7 (PROM Mode)
Operating Mode Selection
MD2
0
0
0
1
Section 3 Operating Modes
Pin Settings
MD1
0
0
1
1
MD0
0
1
0
1
Mode Name
MCU mode 0
MCU mode 1
MCU mode 2
PROM mode
Bus Width of Area 0
8 bits
16 bits
On-chip ROM
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