HD6473258P10 Renesas Electronics America, HD6473258P10 Datasheet - Page 206

• Manufacturer Part Number: HD6473258P10
• Description: IC H8 MCU OTP 32K 64DIP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/325r

Specifications of HD6473258P10

• Core Processor: H8/300
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SCI, UART/USART
• Number Of I /o: 53
• 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: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-DIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Peripherals: -

11.1 Overview
The H8/3257 has 60 Kbytes of high-speed, on-chip ROM. The H8/3256 has 48 Kbytes. The
H8/325 has 32 Kbytes. The H8/324 has 24 Kbytes. The H8/323 has 16 Kbytes. The H8/322 has
8 Kbytes. The on-chip ROM is connected to the CPU via a 16-bit data bus. Both byte data and
word data are accessed in two states, enabling rapid data transfer and instruction fetching.
The H8/3257, H8/3256, H8/325, H8/323, and H8/322 are available in two versions: one with
electrically programmable ROM (PROM); the other with masked ROM. The PROM version has a
PROM mode in which the chip can be programmed with a standard PROM writer.
The on-chip ROM is enabled or disabled depending on the MCU operating mode, which is
determined by the inputs at the mode pins (MD
state. See table 11-1.
Table 11-1. On-Chip ROM Usage in Each MCU Mode
Mode
Mode 1 (expanded mode)
Mode 2 (expanded mode)
Mode 3 (single-chip mode)
Mode pins
MD
0
1
1
Section 11. ROM
1
MD
1
0
1
1
201
and MD
0
0
) when the chip comes out of the reset
On-chip ROM
Disabled (external addresses)
Enabled
Enabled