87C196JV Intel Corporation, 87C196JV Datasheet - Page 35

• Manufacturer Part Number: 87C196JV
• Description: ADVANCED 16-BIT CHMOS MICROCONTROLLER
• Manufacturer: Intel Corporation

Datasheet
P2_PIN.x
P2_REG.x
P2_DIR.x
P2_MODE.x
NOTE: Writing to these bits will have no effect.
P5_PIN.x
P5_REG.x
P5_DIR.x
P5_MODE.x
P5_MODE.x
P5_MODE.x
P5_MODE.x
NOTE: Writing to these bits will have no effect.
P6_PIN.x
P6_REG.x
P6_DIR.x
P6_MODE.x
NOTE: Writing to these bits will have no effect.
7. Port5
8. Port6
Register Bits
Register Bits
Register Bits
On the JR-C, P5.1, P5.4, P5.5, P5.6 and P5.7 are not bonded out but are present internally on
the device. This allows the programmer to write to the port registers and clear, set or read the
pin even though it is not available to the outside world. However, to maintain compatibility
with D-step and future devices, it is recommended that the corresponding bits associated with
the removed pins not be used to conditionally branch in software. These bits should be treated
as reserved.
On the JR-D, unused port logic for these five port pins has been removed from the device and
is not available to the programmer. Corresponding bits in the port registers have been
“hardwired” to provide the following results when read:
On the JR-C, P6.2 and P6.3 are not bonded out but are present internally on the device. This
allows the programmer to write to the port registers and clear, set or read the pin even though
it is not available to the outside world. However, to maintain compatibility with D-step and
future devices, it is recommended that the corresponding bits associated with the removed pins
not be used to conditionally branch in software. These bits should be treated as reserved.
On the JR-D, unused port logic for these two port pins has been removed from the device and
is not available to the programmer. Corresponding bits in the port registers have been
“hardwired” to provide the following results when read:
(x = 5)(EA# = 0)
(x = 5)(EA# = 1)
(x = 1,4,5,6,7)
(x = 1,4,5,6,7)
(x = 1,4,5,6,7)
(x = 1,4,6)
(x = 3,5)
(x = 3,5)
(x = 3,5)
(x = 3,5)
(x = 2,3)
(x = 2,3)
(x = 2,3)
(x = 2,3)
(x = 7)
Automotive — 87C196KR, JV, JT, JR, CA Microcontrollers
When Read
When Read
When Read
1
1
1
1
0
1
0
1
1
1
1
0
1
1
0
35