Microchip Technology AT88SC0204C-MPTG

The AT88SC0204C combines 256 bytes of user EEPROM with programmable zone permissions, symmetric mutual authentication, encrypted checksums, and stream encryption. The MPTG suffix denotes the M2 P module with two-wire-only operation in the manufacturer's later, controlled 2015 full specification. It must not be designed as the ISO T=0 MP variant.

The catalog's M2 P, Smart Card Module (TWI) matches the manufacturer's later full-specification ordering table. The M2 P exposed contact area is 12.6 × 11.4 mm, with a square 8.8 × 8.8 mm glob top, 0.58 mm module thickness, and 14.25 mm carrier pitch. A punched module can exceed the exposed-contact dimensions. This module is not an 8-lead PDIP.

Layout checks

• Confirm M2 P square-glob-top construction and orientation.
• Align the C1, C3, C5, and C7 contacts to the host reader.
• Keep TWI-module no-connect pads unconnected.
• Use the controlled mechanical drawing for final excised dimensions.

The registered M2-P JPG is absent locally and returns HTTP 404 on the production site; publication must wait for the correct live image and visual inspection.

Contact functions are taken from the manufacturer's TWI smart-card-module diagram in the 2015 full specification.

C2 is reset only in the different ISO-module configuration; it is unconnected for this MPTG part.

Performance and reliability figures depend on the applicable datasheet conditions; check timing, programming, and system-level security requirements in the controlled full specification.

Other AT88SC0204C order codes differ in module construction or protocol: MJTG uses the M2 J format, while MP identifies the ISO-capable M2 P module in the later ordering table. An 8-lead device is not mechanically interchangeable with this module. Verify exact suffix, contact map, host protocol, zone setup, keys, temperature grade, and mechanical fit before substitution. No unverified internal link is provided.

Microchip hosts both the AT88SC0204C summary datasheet and the newer 2015 Atmel CryptoMemory full specification. The 2015 ordering table explicitly maps the MPTG suffix to M2 P–TWI. The older 2013 summary's ordering row labels MPTG as ISO, inconsistent with its own package note and the later full specification; the later controlled document is used for the interface designation. Check current manufacturer revisions and lifecycle before design release.

Inspect the exact suffix, M2 P square-glob-top module, carrier orientation, contact quality, markings, lot traceability, and material documentation. Validate the two-wire host link and personalized security state during production test. The listing alone does not establish source provenance or secure provisioning.

Design security depends on cryptographic provisioning, host firmware, password management, fuse settings, and threat modeling. Use the later controlled manufacturer full specification to resolve the older summary ordering-label discrepancy. This review draft is not publishable until the correct production M2 P package JPG responds successfully and its content is visually verified.