SH7144 Datasheet, PDF (753/773 Pages) Renesas Technology Corp – Hitachi SuperH RISC engine

Main Revisions and Additions in this Edition
Item
1.1 Features
Page
2
Revisions (See Manual for Details)
Features amended.
• On-chip memory
ROM
Model
ROM
Flash memory HD64F7144F50
Version
HD64F7145F50
256 kbytes
256 kbytes
Mask ROM
Version
HD647144F50* 256 kbytes
HD6437145F50* 256 kbytes
Note: * Under development
RAM
8 kbytes
8 kbytes
8 kbytes
8 kbytes
• I/O ports
Model
No. of I/O Pins
HD64F7144F50/ 74
HD6437144F50*
HD64F7145F50/ 98
HD6437145F50*
Note: * Under development
No. of Input-only
Pins
8
8
1.4 Pin Functions
• Compact package
Model
Package
HD64F7144F50/HD64F7144F50* QFP-112
HD64F7145F50/HD6437145F50* LGFP-144
Note: * Under development
7, 8
Pin description added.
Type Symbol Name
Function
Clock CK
System clock Supplies the system clock to
output
external devices.
System
control
WDTOVF
Watchdog
timer
overflow
Output signal for the
watchdog timer overflow.
If this pin needs to be pulled-
down, the resistance value
must be 1 MΩ or higher.
Rev. 2.0, 09/02, page 713 of 732