h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 793

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

The user debug interface (H-UDI) provides a boundary scan function using the JTAG (Joint Test
Action Group, IEEE Std 1149.1, IEEE Standard Test Access Port and Boundary-Scan
Architecture) and a pin-compatible serial interface. The H-UDI performs serial transfer by means
of external signal control.
25.1
The H-UDI has the following features conforming to the IEEE1149.1 standard.
HUDS000A_000020020300
Five test pins (ETCK, ETDI, ETDO, ETMS, and ETRST)
TAP controller
Six instructions
BYPASS mode
EXTEST mode
SAMPLE/PRELOAD mode
CLAMP mode
HIGHZ mode
IDCODE mode
(These instructions are test modes corresponding to IEEE 1149.1.)
Features
Section 25 User Debug Interface (H-UDI)
Section 25 User Debug Interface (H-UDI)
Rev. 3.00 Jan 25, 2006 page 741 of 872
REJ09B0286-0300