87C196JV Intel Corporation, 87C196JV Datasheet - Page 31

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

5.0
Datasheet
52-Lead Devices
Intel offers 52-lead versions of the 87C196KR device: the 87C196JV, JT, and JR devices. The first
samples and production units use the 87C196KR die and bond it out in a 52-lead package.
It is important to point out some functionality differences because of future devices or to remain
software consistent with the 68-lead device. Because of the absence of pins on the 52-lead device
some functions are not supported.
52-Lead Unsupported Functions:
The following is a list of recommended practices when using the 52-lead device:
1. External Memory. Use an 8-bit bus mode only. There is neither a WRH# or BUSWIDTH
2. Wait State Control. Use the CCB bytes to configure the maximum number of wait states. If
3. NMI Support. The NMI is not bonded out. Make the NMI vector at location 203Eh vector to
4. Auto-Programming Mode. The 52-lead device will ONLY support the 16-bit zero wait state
5. EPA4 through EPA7. Since the JR, JT, and JV devices use the KR silicon, these functions are
6. Slave Port Support. The Slave port cannot be easily used on 52-lead devices due to 5.4/
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Analog Channels 0 and 1
INST Pin Functionality
SLPINT Pin Support
HLD#/HLDA# Functionality
External Clocking/Direction of Timer1
WRH# or BHE Functions
Dynamic Buswidth
Dynamic Wait State Control
pin. The bus cannot dynamically switch from 8- to 16-bit or vice versa. Set the CCB bytes to
an 8-bit only mode, using WR# function only.
the READY pin is selected to be a system function, the device will lockup waiting for
READY. If the READY pin is configured as LSIO (default after RESET#), the internal logic
will receive a logic “0” level and insert the CCB defined number of wait states in the bus
cycle. DON'T USE IRC = “111”.
a Return instruction. This is for glitch safety protection only.
bus during auto-programming.
in the device, just not bonded out. A programmer can use these as compare only channels or
for other functions like software timer, start an A/D conversion, or reset timers.
SLPINT and P5.1/SLPCS not being bonded-out.
Automotive — 87C196KR, JV, JT, JR, CA Microcontrollers
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