XA-C3 NXP Semiconductors, XA-C3 Datasheet - Page 41

• Manufacturer Part Number: XA-C3
• Description: The XA-C3 is a member of the Philips XA (eXtended Architecture) family of high-performance 16-bit single-chip microcontrollers
• Manufacturer: NXP Semiconductors

1. P – programmed. U – unprogrammed.
2. Any other combination of the security bits is not defined.
Philips Semiconductors
Note: All other pins are disconnected. V
EPROM CHARACTERISTICS
The XA–C37 is programmed by using a modified Improved
Quick–Pulse Programming
the same as that used by the later 80C51 family EPROM parts.
However, different pins are used for many programming functions.
Detailed EPROM programming information may be obtained from
the internet at www.philipsmcu.com/ftp.html.
The XA–C3 contains three signature bytes that can be read and
used by an EPROM programming system to identify the device. The
Table 21. PROGRAM Security Bits
NOTES:
2000 Jan 25
XA 16-bit microcontroller family
32K/1024 OTP CAN transport layer controller
1 UART, 1 SPI Port, CAN 2.0B, 32 CAN ID filters, transport layer co-processor
1
2
3
4
PROGRAM LOCK BITS
SB1
U
P
P
P
SB2
U
U
P
P
algorithm. This algorithm is essentially
SB3
U
U
U
P
DD
PROTECTION DESCRIPTION
No PROGRAM Security features enabled.
MOVC instructions executed from External PROGRAM memory are disabled from fetching code
bytes from internal memory and further programming of the EPROM is disabled.
Same as 2, also verify is disabled.
Same as 3, External execution is disabled. Internal DATA RAM is not accessible.
=2V to 5.5V
Figure 33. I
(NC)
V
DD
DD
RST
XTAL2
XTAL1
V
Test Condition, Power-Down Mode
SS
34
signature bytes identify the device as an XA–Gx manufactured by
Philips.
Security Bits
With none of the security bits programmed the code in the
PROGRAM memory can be verified. When only security bit 1 (see
Table 21) is programmed, MOVC instructions executed from
External PROGRAM memory are disabled from fetching code bytes
from the internal memory. All further programming of the EPROM is
disabled. When, in addition to the above, security bits 1 and 2 are
programmed, verify mode is disabled. When all three security bits
are programmed, all of the conditions above apply and all External
PROGRAM memory execution is disabled. (See Table 21).
V
EA
SU00585A
DD
V
DD
Preliminary specification
XA-C3